The customs clearance of Yili and Xie Cheng also inspired others.

The mission this time is not difficult at all, as long as you are careful enough not to miss any pattern decoration, the rest is pure physical labor—at least, for most people.

Just like Yili and Xie Cheng felt that the previous decryption part was very simple, but some teams had to scratch their heads for a long time before thinking of spelling out the secret words by comparison. This time, although it was only a complete imitation, some teams still went astray.

Carelessness is a relatively common mistake. Maybe a small white stone is missing on one side, or maybe a star-shaped pattern is forgotten on one side. After all, not everyone is like Eli Xiecheng. People specialize in puzzles.The consequence of two people working together is that sometimes some graphics are missed, and they think it is the responsibility of the other party.

"Mona, you're missing a piece here!" A man scolded his girlfriend.

"Oh, Tracy, I saw you just filling in the sand over there, I thought you..." Mona frowned and explained, kneeling carefully beside the pattern - due to natural atrophy of the leg muscles, She has only one leg that is healthy, and the other leg is a prosthetic. At this moment, under her boyfriend's scolding, she lowered her head and filled the missing corner of the moon pattern with white sand.

"Didn't I go to transport the sand later? Why didn't you do it after you saw it, and you insisted on telling me?" The man stood by the side with his waist in his arms, watching the woman complete the final pattern bit by bit, still dissatisfied .

"I'm going to move the sand too." Mona explained a little aggrieved, "It should be fine now, let's have that old lady come over and check." Mona didn't want to quarrel with her boyfriend, she just wanted to calm things down.

"Hmph." Tracy also consciously and generously did not continue, and walked towards the old native lady beside her with her mouth curled up.

Next to the two, Phil and Claire looked at each other, and both of them frowned.Obviously, the Dunphys also looked down upon that man.It sucks in any country for a man to treat a woman so roughly, especially if it's not a stranger but his girlfriend.

"I have to talk to him." Phil rolled up his sleeves, and wanted to talk about his life with the other party—girlfriends shouldn't be treated like this, if this young man continues like this, his girlfriend will definitely not be able to stand he went.

"No, Phil." Claire pressed her husband, "That's someone else's business, let's not worry about it too much."

Even if it is domestic violence in the community, some people will think it is nosy, but at that time they can stand up, because they are not the only people who are just, there are so many neighbors who will join them in condemning the jerk who used violence.

However, not so in this game.

There were only two of them, and the others might not be willing to speak out. Moreover, this was not at the level of violence. Even if they wanted to do something, they didn't know where to start. After all, it was just a bad attitude at best.

Instead of making unnecessary trouble for yourself, let's wait and see what happens.

Besides, even if the two of them are willing to come forward, will the girl appreciate them?

It would be best if the girl could take their love, but the most worrying thing is that the girl thinks it’s nothing, that the man still loves her very much, it’s just the other’s bad temper for a while——Clare saw this kind of love and was fainted The young girl with a brain, endured humiliation again and again, but what she got in exchange was not love and respect from the other party, but more and more insults.

The most troubling thing was that the girl didn't realize the problem herself, and it was useless for them to talk too much. They could only do something after she figured it out herself.

"But..." Phil was still a little unwilling.

Seeing that man treat that little girl like this, he wondered whether his two precious daughters would be treated like this in the future, and whether his daughters whom he regarded as precious would be bullied like this in the future.Although with the wit of the eldest daughter and the poisonous tongue of the youngest daughter, most people would not be able to bully them, but who can say for sure about love?It's not that whoever is usually smarter and more powerful will not suffer.Anyway, Phil couldn't calm down at the thought of that possibility.

"Phil." Claire patted Phil's arm again. Even if she wanted to do something, it would depend on the girl's own thoughts.Otherwise, even if he insists on standing up for that girl, what's the point if the girl doesn't appreciate it, but still resents her?

"Claire..." It's not that Phil doesn't understand Claire's thoughts. Although being a father and a part of justice makes him look down on that man, he really doesn't have the right to meddle in other people's affairs.Thinking of this, Phil felt a little lost.

"It's okay, Phil. If she needs us, let's do something, okay?" Claire knelt on the sand, raised her body, hugged her husband, and patted him on the back comfortingly.

"En." Holding his wife tightly, Phil nodded gloomily.

There was an undercurrent among the contestants, and the audience couldn't calm down.

When the players are stupid, of course they can laugh happily, but when the players perform poorly-not in the performance of the task, but in the performance of the world-the audience will be more righteously outraged, or Said it was unbearable.

——That man is simply amazing!Is that what he did to his girlfriend? !That's not to the girlfriend, it's to the maid!

——You’re not even that rude to a maid!Whoever treats the servants like this now, the servants will resign, okay?

——So, this is the attitude towards slaves, right?They simply don't treat each other as equals!

- Such a person can have a girlfriend, I am desperate for this world! ! !

Almost no one could understand the man's actions, and the audience almost condemned him overwhelmingly.

Even if someone occasionally says something for a man, it will be sprayed back by more people soon.

——Actually, I think it’s okay, but his attitude is a bit off. Maybe he still loves his girlfriend very much...

——Is this a matter of poor attitude?This is a very bad attitude!Promise me, don't take such an important matter lightly, okay?This is not making a fuss out of a molehill, seeing the big from the small!

——Dare to ask the host, do you love your girlfriend so much?If so, your girlfriend must be cursed by the devil to have a boyfriend like you!What she should do most is to break up with you immediately!

——If love is like this, it is too unbearable!

——Love is not like this!If this is love, then this is also twisted and abnormal love!Normal human beings, whose love is like this?Come on, come up with a template!

— @chester, @lilian, no thanks.

——Yes, upstairs is the correct way to open love, okay?Did you see it, the correct way is above!

——Wooooow, when I saw the two of them, I believed in love again!Although the two of them blinded my eyes with all kinds of distractions, I still feel that this is true love!

——I don’t know if you have noticed, among all these contestants, Lilian is the cleanest one!Chester didn't ask her to do any heavy work, and he took care of all the moving work, leaving Lilian to do the delicate work!I was super moved watching from the sidelines, Chester is definitely one of the best girlfriends out of these guys!

——That's right, and Lilian is also very kind to Chester.The most touching thing about them is that Chester is kind to Lilian, and Lilian is also kind to Chester.Especially when Lilian got the clue card and turned around to hug Chester, Chester took a small step away instead, not wanting to let her get dusty too, but Lilian didn't care and still hugged Chester firmly. In the past, Chester hugged her carefully.To be honest, when I saw this scene, I don't know why, my nose was sore.I think they are very considerate of each other, and they really put each other in their hearts.

——Also, before they drove away, Lilian even gave Chester a flush with water!I don't know if it was the program's editing, or if Lilian was the only one who did it. Anyway, when I saw that scene, my heart almost melted!

——I think Chester's heart should be the same as yours.

While criticizing Tracy's excesses, the audience gave Chester and Lillian a good couple stamp.

However, considering that the game has just started, the rational audience did not make a complete conclusion, and beat Tracy as a scumbag, but it was not much better.At least, this is a grumpy, inconsiderate girlfriend, there is no doubt about it.

Soon, the rest of the players also completed their designs one by one. Except for a few small frictions among the teams, most of the teams completed this not difficult task harmoniously.After that, the contestants began to dance wildly on their respective patterns.However, as long as it is dancing on the pattern, no matter what kind of weird dance it is, the old lady next to it will approve it.

"Have we not danced yet?!" On the side, Dexter observed the leaving teams one by one, and finally realized that they were the first team to complete the pattern, but they hadn't gotten a clue card until now, and even the TV The audience in front of the plane couldn't help but worry about them.Why are these two people so stupid!

"Yes!" Sean slapped his thigh, "Dexter, you are so smart!"

"It's okay, okay." Dexter waved his hands modestly, "Then, let's get started!"

"Okay!" Sean responded immediately, and the two stood carefully on their patterns, and began to twist their waists and arms.

Well, the audience thinks it's a bit spicy.

***

As soon as the camera turns, Yili and Xie Cheng are driving towards Broken Mountain.

Yili drove very steadily, and nothing that Xie Cheng was worried about happened - in a completely unfamiliar place, and she didn't understand the local traffic laws, what would happen if she was speeding and was chased afterward for a ticket.Yili is very good at driving, and she is also happy to enjoy the unrestrained speed, just like she likes to ride a horse, but she understands the importance of obeying traffic rules.

The two quickly drove into the town, and as soon as they saw a rare passerby—this vast land is really sparsely populated, and there were no passers-by along the way, Yili immediately asked him for directions, "Hello, Do you know where the magpie's home is?"

"The House of Magpies, it's in our Central Football Club." The old man wearing a big straw hat replied with a smile. It was the only football club in this small town, and of course they knew it well.

"Thank you, how should we go to the Central Football Club?" Yi Li hurriedly asked, she was very lucky to be able to ask the person who knew the way right away, and even Yi Li felt that finding the way was smooth this time.

"Go straight, pass one block, turn right, and walk another two blocks." The old man patiently said to Yi Li.

"Thank you, thank you so much." Yili thanked the old man again.

After the conversation between the two ended, the photographer in the back seat got out of the car and talked with the old man. After obtaining a written agreement from the other party to use his portrait in this program, a group of four drove to the place pointed by the old man.

As soon as they drove near that street, the two saw the brick-red building, with the words Central Football Club written on the outside wall, and beside the name were two black and white characters, one left and one right. magpie.

"Here, it should be here." Yili parked the car, put down the handbrake, and said to Xie Cheng.

"Well, let's go." Xie Cheng walked down first, and opened the car door for Yi Li who was still pulling out the car key.

"Thank you." Yili took a step forward, naturally printed a light kiss on the corner of her lover's mouth, and then ran towards the building with Xie Cheng.

As soon as they walked into the wide-open courtyard door, the two saw an open football field. There were countless footballs scattered on the field. Yili estimated that there were hundreds of them, and there were familiar red and yellow clue boxes standing beside the field.

The two ran over hand in hand, Yili took out a clue card, opened it and said, "Roadblock mission: who knows ore better?"

Yi Li and Xie Cheng looked at each other, Xie Cheng's face wrinkled, Yi Li couldn't help but chuckled, "Then I'll do it this time."

When you hear ore, it is easy to think of iron ore, copper ore, etc., and this should belong to the category of chemistry.However, Yili's major is business, and Xie Cheng's major is computer-related, and the two are not good at chemistry.That being the case, it doesn't matter who comes.Considering that Xie Cheng had worked very hard before, Yili had already made up her mind that she would complete this task.

After confirming the candidate, Yili turned the clue card to the back and continued to read, "Brocken Mountain was once a famous mine in Australia. In this land, people discovered rich mineral resources. At the same time, rare The original arboreal animal koala is also a national treasure of Australia. This time, the players will change into koala suits in the locker room, and find the five atomic numbers among the footballs with element names scattered on the field Metal elements greater than twenty. Attach a periodic table."

"This task doesn't sound very simple." Xie Cheng frowned. In fact, he felt that this task was too challenging. The periodic table of elements provided by the program group was abbreviated and there was no full name. Who knows whether Sb, Re and the like are metal elements?Is it just luck?

"We only need to know more than five." Yili thought for a while and replied, "Such as iron, copper, tin, gold, silver, zinc, nickel, manganese, barium, tungsten, platinum, lead, these are After twenty, I can focus on finding these."

These are common metal elements in middle and high school chemistry, and Yili is relieved that she still remembers them now.Of course, the most fortunate thing is that the program team did not go crazy enough to pick out a bunch of simple chemical substances for them to choose. Otherwise, who knows which of the bunch of silver-white metals is the 13th aluminum and which is the 78th platinum.Sure enough, she has learned mathematics, physics and chemistry well, and she is not afraid to travel all over the world. The teachers back then really did not bully her.

But this method is also quite tricky, because the metal elements that Yili can identify are limited, and she is not sure that she can find exactly five of these elements. This is only the most ideal situation.But seeing so many footballs strewn across the field, only some of which are up to the task, maybe...she can try her luck again.

"That's fine." Hearing Yili's plan, Xie Cheng was also slightly relieved, but he didn't even think about it and just watched from the sidelines, "I'll go to the side of the road to see if anyone is free, and can help us look up this element Which elements are metals on the periodic table."

"Yeah." Yili nodded, seeing another car parked outside the yard, and people from other teams also came here, she immediately said to Xie Cheng, "Then I'm going to change clothes, see you later."

"Okay." Xie Cheng watched Yili go to change clothes, and he took a few steps outside the yard to see if there were any pedestrians passing by, but he couldn't go too far, even if it was in a mission, the distance between teammates was slightly relaxed. It's a little more relaxed, but it's impossible to let him go all over the street looking for people.

There are two locker rooms in the stadium. Yili entered a locker room marked by the program group as women's, and changed into a designated koala outfit.

Round ears, round headgear—the kind that shows your face, round belly, and round... Ah, koalas don't have tails, but they have round palms.Yili practically thinks that this kind of plush glove covering the entire palm must be very inconvenient when picking up a football, and she can't help but feel distressed when she thinks of using such claws to turn over the football and pick it up...

So, when Yili walked out of the dressing room with her legs wrapped in the chubby doll costume, what the audience saw was a serious and deep thinking koala...

——Hahahahahaha, this must be the most serious koala in history, not one of them!

——No, judging by the face, this is the most beautiful koala in history!Come to argue! ! !

——Praise for the fluffy round ears!Looks and feels good!

——No tail, bad review! ! !

The focus of the audience is always weird.

——The koala has no tail! ! !

Finally someone complained about the koala.

When Yili stepped onto the field with three sighs, Xie Cheng was stunned—who is this cute little koala?It's completely different from Yili's aura!No, it's not that they don't fit, there seems to be a subtle contrast...

Yili noticed the sight from the side of the court, and looked at Xie Cheng strangely.

Xie Cheng's eyes wandered away, but his ears were slightly red...

Simply, Yili was not the only one who walked into the stadium soon.

When men and women in chubby koala suits searched for mission items in the stadium together, the scene was hilarious.

The contestants are bowing their heads and earnestly completing the task, but the teammates are groaning on the sidelines - the program group is not allowed to bring mobile phones, cameras and other items, making them unable to take photos of their lovers, friends and family members.And after the show was broadcast, there were too few shots for everyone, they simply couldn't get enough of it! ! !

However, soon, the players have no emotion in the world, because everyone's task is in trouble.

"Phil, is Fe a metal element?" Claire asked loudly in the stadium.

"I don't know, Claire!" Phil yelled back loudly from the sidelines with his face covered in circles.

"What about Cu?" Claire asked hopelessly.

"Sorry, Claire..." Phil also looked desperate—his chemistry has already been returned to the teacher!

"Think of it, Phil!" Claire was about to collapse!

"..." Filmer, he didn't know what to do.

"If only Alex was here." He couldn't help muttering, this kind of question must not trouble the second daughter of Xueba!

"Yeah." Claire also said quietly, "If Alex is here, let alone find five, all of them will be found within minutes!" Alex, where are you, mother needs you!Claire burst into tears in her heart.

"Hey, why didn't we inherit Alex's IQ..." Phil couldn't help but sighed.

"..." At this time, don't worry about who inherits who with your husband. Anyway, the two of them can give birth to Alex, which is already a contribution to the American people, or to the American scientific community... …

This frustrating scene has been staged in almost every team.

"What the hell is Zn!" Someone tugged at his hair frantically.

——Things that you can turn in as quest items.

"Is Pt really on the periodic table? Why can't I find QAQ when I search and search?" Weeping at the periodic table.

——It’s because you’re blind. It’s in row 6 and column 10. It’s the ring on your ring finger.

"What is Au! Is there really such an element on the earth?!" Has begun to doubt life.

——Yes, there are, the important reserves of various countries, the entire treasury of the central bank is full of it.

Looking at the players struggling in pain, the chemical emperors in front of the TV happily dubbed them voice-overs.

Yili will not be completely entangled with the elements on the periodic table of elements "it knows me, I don't know it", and can recognize some elements to some extent, but her current progress is not optimistic, just like her as previously preset.

When Claire yelled to Phil, "Is Fe a metal element?", Ellie really wanted to say to Mrs. Dunphy: No, it's not, so please give it to me.But in order not to turn against Claire, Yili could only regretfully keep silent.

When Claire yelled to Phil, "What about it?", Yili wanted to beat the ground—why didn't they cherish the goal even though it was at hand?If you don't want it, give it to her, give it to her! ! !

Yili looked at the Au, Ag, and Pt in her hand, and then silently rummaged through the Si, Mg, and Te all over the floor for a while—some were not metal elements, some were metal elements, but in the top twenty, she still had the most Determined elements, Yili helplessly rolled footballs one by one, but couldn't find a clue.

Of course, not everyone is silently rooting for the villains of the program team. There are always one or two great masters who are able to handle this task with ease, such as Connor, who is a doctor by profession and of course has no problem with chemistry-applying for medicine in graduate school Before entering college, his four-year university major was chemistry, and he is a living master of chemistry.

So, under everyone's vicious eyes, Connor, who was wearing a cute koala costume but couldn't hide his sharp temperament, almost picked out the messy footballs quickly, accurately and ruthlessly. He picked up five metal elements written with [-] characters, and walked away with his blind date girlfriend under the envious eyes of others...

At this moment, Connor became the public enemy of all of them! ! ! (╯‵ ′)╯︵┻━┻

Soon after Connor and Alicia left, Sean and Dexter followed suit.

"Sean, you actually have this skill!" Dexter looked at Sean with admiration - he never thought that after Connor, the second one to find all five metal elements turned out to be Sean!Even if it was the powerful couple group, or the father-daughter group, or the female soldier group, he wouldn't be so surprised, because those groups have always been leading.

"When I was in high school, my hobby was chemistry." It was a rare opportunity for Sean to be praised by his teammates. Use it here."

"Now we also have the lead, let's go!" Dexter patted Sean on the shoulder, obviously not planning to let his companion have a chance to continue to slam, and urged repeatedly.

"Okay." Sean was a little melancholy—why was Dexter's praise so short-lived! ! !

Seeing two groups of people leave, the other teams became more and more anxious.

Finally, someone gave up studying these bible-like chemical elements, grabbed three or four footballs from his feet, put them together with the one or two in his own ball frame, made up five, and ran to the side for review. I'm going to try my luck on the other side - what if they are lucky and the one they picked up at random and the one they picked out before happen to meet the requirements?

Of course, since you have chosen this way of trying your luck, there are bound to be a small number of people who can pass. How many people in the world can be lucky enough to randomly pick what they need from the footballs in half a football field?But among the remaining ten teams, in the undaunted attempts of the players to try their luck again and again, finally someone was favored by the goddess of luck.

"Oh! My God! Thank you! Thank you so much!" When receiving the clue card representing clearance from the reviewer, the lucky contestant was almost ecstatic!I, who had never won a lottery no matter how small, actually managed to complete this task blindly and met a dead mouse? !This is definitely the explosion of my character in my life!

Watch the three teams leaving with a rapturous dance - the two gray-haired real old couples, the Dunphys (what goes around, though they can't do anything about it) and Grumpy and his prosthetic girlfriend (This is so unfair!), and the people left behind became more and more impatient, wishing to grab the clue card directly from the old man's pocket!

Yili couldn't help but clenched her lower lip, obviously she had identified three, as long as she got two more metal elements that met the requirements, she could complete the mission, but she couldn't do anything wrong, perfectly avoiding the correct mission item, Instead, I took some messy elements... How black is her hand! ! !At this moment, Yili was extremely depressed. She even thought that if two or three more teams passed this mission, she might discuss with Xie Cheng about using the pass-through card!Otherwise, it would be too dangerous to fall to the No. 9 and No. [-] rankings!

"Lilian!" Suddenly, someone called Yi Li on the court shrouded in gray clouds (formed by the players' resentment).

"Chester?" Yi Li was startled, her eyes lit up immediately, and she couldn't help looking at Xie Cheng on the sidelines.

"I found a buddy who is willing to help us. He happens to have a mobile phone. Do you have anything to check?" Xie Cheng also activated his ability to call everyone a brother, and at this time he finally pulled a person over to help (mainly Because there are too few people on the street, other people who went out to find help like Xie Cheng failed to find help).

"Hmm!" At this moment, Xie Cheng's figure was incomparably majestic in Yili's eyes!

"What is Zr? Is it a metal element?" Yili asked loudly, wiping the hot and urgent sweat from her forehead.

"...It's zirconium, it's a metal element!" The brother next to Xie Cheng quickly searched on his phone, and Xie Cheng quickly reported the results.

"What about Te?" Under the reddened eyes of others, Yili quickly put the football with Zr written on it into her ball frame with her furry koala palm, and almost slipped down in the middle. The contestants next to her were staring at her closely, as if they were always ready to snatch her away, Yi Li secretly raised her vigilance and asked.

"That's tellurium, a non-metallic element!" Xie Cheng replied loudly.

"Ge?" Ellie pushed aside the soccer ball with Te written on it and pulled out another soccer ball and asked.

"It's germanium, a semiconductor material, but it's also a metal element!" Xie Cheng quickly replied.

"Okay!" Yili immediately put the last football into the ball frame, dragged her ball frame, and walked quickly to the side to hand in the task.

The old man in charge of the review checked the football that Yili brought, and happily handed a clue card to Yili.

"Thank you, thank you!" Yili thanked the other party again and again, and then trot all the way to Xie Cheng's side, and hugged him deeply - if Xie Cheng hadn't found a helping hand for this mission, she might still be trapped here!Fortunately, Xie Cheng was resourceful enough, he decided to find a helper just in case from the very beginning, and now it really comes in handy!It's just No.6, and there is still room for flipping everything!

"By the way, where is the person who helped us?" Yi Li looked at Xie Cheng who was empty around her, and wanted to say thank you.

"Over there." Xie Cheng pointed to the overcrowded side. Sure enough, among a group of overly enthusiastic contestants, a strange boy was standing in the middle with a face full of panic, and everyone else was shouting at him, "Help us first." !" "No, help us!".

"It's really popular." Yi Li said with emotion—fortunately, Xie Cheng acted first, otherwise he might not have been able to win over so many people.However, Yi Li also gave up her plan to thank Xie Cheng, Xie Cheng should have thanked her.

"Look at the clue card." Yi Li quickly said to Xie Cheng without wasting time on such matters.

The two opened the clue card and read, "After completing the roadblock mission, the team can drive to the abandoned silver mine at the intersection mine. This is the relay station this time. The last team to arrive may be eliminated."

"I'm going to change clothes, come out right away!" After reading the clue card, Yili said immediately—she didn't forget that the first five groups had been gone for a while, and if there were no accidents, she and Xie Cheng could only fight for it. No.6, and it is when others are about to catch up.However, this is also good, always being the first will attract the hostility of other people, and if she encounters a group attack from other teams, then she and Xie Cheng will be in trouble.It's just that next time they must return to the vanguard, No.6 is already in the middle, it's too insecure!

"Okay." Xie Cheng nodded, "I'll wait for you here."

"Yeah!" Yili went back to the dressing room as fast as she could, changed her clothes, and ran out quickly.

"Let's go, I've already asked the way." Xie Cheng compared the handsome guy standing next to Brianna at the moment—Brianna's invincible affinity really won the other party's first help, and the others had to He walked out of the yard to see if there were any passers-by, but Xie Cheng had waited so long to find someone, and these people could only count on this little brother.

"Okay." Yili followed Xie Cheng and walked quickly to their car.

"Is it hot?" Xie Cheng looked at Yili's reddish cheeks and sweaty nose, and asked softly—the weather in early summer, wrapped in such a thick doll costume, seems cute, but to the wearer Maybe not.

"It's okay." Yili shook her head, and didn't say much on this point. The most important thing now is the competition.

"Hmm..." Actually, it's okay to complain to him once in a while.Xie Cheng thought so, but said, "I'm driving, you can sit in the passenger seat." The air conditioner in the passenger seat is more comfortable than the back seat.

"Okay." Yili didn't reject Xie Cheng's silent consideration, and the two of them, along with the cameraman and sound engineer behind them, quickly got into the car and drove towards the destination.

In the old house by the old silver mine, the smiling host and the local uncle in a miner's hat were already waiting there.

"Welcome to Broken Hill, Australia." The local uncle said to the two with a smile.

"Thank you." Yi Li and Xie Cheng smiled back at each other.

"Lilian, Chester." The host looked at the two, "Congratulations, you are the sixth team to arrive."

"Thank you." Yi Li and Xie Cheng were already mentally prepared for this outcome, and they held hands tightly.

"This is the clue card for your new stage." The host handed the clue card to the two, "Now, you have to drive to the nearby train station and take a night train across the desert to Sydney. The car can be parked directly. It will be recovered by our staff at designated car parks near the station. Once you arrive in Sydney, you will be able to view the new clue card."

"Okay, we understand." Yi Li and Xie Cheng looked at each other and agreed together.

Both of them knew that the new schedule had already begun, and they were about to start their own counterattack!

The author has something to say: I think about the days when I was tortured by mathematics, physics and chemistry~

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