Encounter Taotie by chance at the beginning and practice longevity skills

A week later, the exams for the new students in the school began.

Qi Fei, who always follows the lead but never ends, also came to the classroom.

When Lei Ze saw Qi Fei, he also smiled slightly and said hello.

Qi Fei smiled slightly at Lei Ze, responding to Lei Ze's greeting.

Lei Ze then sent a message to Wang Changsheng: "Hey, little bastard, let's see what this guy Qi Fei is thinking?"

Wang Changsheng sent a message: "As soon as this guy came in, he kept thinking about a pink hippopotamus."

Lei Ze sent a message and said: "Okay, it seems that no one wants to let others find out what they are thinking. Little Turtle, please don't expose your talent again, otherwise you will be in big trouble."

Wang Changsheng replied: "I understand, I understand."

At this time, an older monk came in.

"Quiet, Quiet, today is the only test for new disciples. Chengling Academy does not need stupid disciples. The specific scores and passing scores are marked in the test paper."

"Everyone is asked to move their desks and stay three feet away from the people next to them. Whispering and cheating are prohibited during the exam. If found, you will be disqualified from the exam."

As the monk finished speaking, the atmosphere in the entire examination room became more serious and tense. The new disciples hurriedly followed the instructions and moved their desks, making sure to keep enough distance from those around them to avoid any suspicion of cheating.

Lei Ze, General and Xianmeng also quickly adjusted their seats. In the examination room, every student appeared focused and serious, and they all understood the importance of this exam.

Lei Ze got the test paper and looked at it. It basically contained some basic knowledge about the world of immortality. He finished the answer quickly, but he smiled when he saw the last question.

This last question is an additional question. Score ten points.

The previous question is worth 90 points. Only if you answer this question correctly can you get full marks. 100 points are for A grade, 90 to 100 points are for B grade, and 80 to 90 points are for C grade. A score below eighty points is considered unqualified.

Grade A can get 100 spiritual stones, grade B can get 10 spiritual stones, and grade C can get no spiritual stones. If they fail, they will be expelled from the academy.

Therefore, if you want to get the first grade, you must answer all the previous questions correctly, and you must also answer the last question correctly.

This last question seemed quite simple to Lei Ze, but for other disciples, it was a bit worrying.

The question is this:

Wang Da is a golden elixir monk. He accidentally entered a secret realm and obtained an ancient book handed down from ancient times. The ancient book recorded a method of combining fire and thunder.

First, wrap the fire-attributed Qi around the three Yang meridians of the hand, in order, the large intestine meridian of Yangming of the hand, the small intestine meridian of Taiyang of the hand, and the triple burner meridian of the Shaoyang of the hand. At the same time, the thunder-attributed energy is circulated around... and finally merges with the Ren channel to release it.

Because the ancient book was damaged, Wang Da didn't know which meridians the thunder attribute energy should circulate. He decided to try one by one. If Wang Da was unlucky, how many times would he try at most before he could successfully release the spell.

First of all, this is an assessment of the twelve regular meridians and the eight extraordinary meridians. The current techniques are all about Qi surrounding the regular meridians, so there are twelve mudras corresponding to the twelve regular meridians.

But the title also says that the fire-attributed Qi circulates around the three yang meridians of the hand. These are three meridians, which means that the thunder-attributed Qi cannot circulate around these three meridians. Because if the meridians that are wound are the same, it will not be said that they meet in the Ren meridians in the end, but they should have met in the three Yang meridians of the hand before.

However, it did not say which meridians the thunder-attribute energy would go around specifically. It might be one or multiple meridians, and which one it would go around first and which one it would go around later would be different.

So the correct answer should be times.

As a time traveler, it is easy to get this question right.

It's just a simple permutation and combination.

If you only go around one meridian, there are 9 possibilities.

If two meridians are wound, there will be 9x8 possible times because there will be a difference between which one is wound first and which one is wound last.

That is to say, after winding one meridian, there are 8 possibilities for winding the second meridian, but there are 9 possibilities for winding one meridian, so in the end, it is calculated that there are 9x8 possibilities for winding two meridians.

So by analogy, if you go around three meridians, it is possible 9x8x7 times.

...

依次到绕九条经脉，就有9x8x7x6x5x4x3x2x1次可能。

Finally, adding up the numbers of winding one meridian and winding two, three, four, five, six, seven, eight and nine, we get 986,409 possibilities.

(You don’t need to go into too much detail if you don’t understand this. I just want to use this question to illustrate the importance of martial arts to martial arts. If there are no martial arts, it may take a long time to create your own martial arts. After many attempts, it will be a waste. Time will lead to obsession.)

However, even though he knew the answer, Lei Ze was not prepared to write it, because it might be a trap for the above to understand the time-travelers, and it would definitely be eye-catching after he got the first grade after writing it.

Therefore, it would be better to do less than to do more. He could just get a B grade.

At the same time, he sent a message to Wang Changsheng: "Little turtle, see if there is anyone who thinks the same as me. Whether he writes or not, you have to tell me."

Wang Changsheng sent a message: "Master, this is a bit difficult. Normally I can only listen to the opinions of two or three people. When there are more people, I can only listen to two or three people. If there are too many people, I will collapse. "

Lei Ze sent a message: "Okay, okay."

But I thought in my heart: It’s really a useless skill.

Wang Changsheng sent a message: "Master, I am not useless. If you think about it, this talent is already quite good..."

Lei Ze rubbed his forehead. Sure enough, this mind-reading thing was too annoying.

He no longer thought about Wang Changsheng's skills, and instead used his spiritual consciousness to look at other people's test papers to see if they had written anything.

General, she hasn't even finished writing the first part of it. It's such a waste. She is over 80 years old, why is she still writing so slowly and so ugly?

Look at Xianmeng's, haha, the handwriting is beautiful and neat, I'm still thinking about the last question.

Looking at Qi Fei's, well, he didn't write anything either, so he probably didn't want to be too public about it.

Lei Ze sent a message to Wang Changsheng and said, "Hey, let's see what Qi Fei is thinking."

Wang Changsheng replied: "He is about to hand in the paper. It seems that he has something important to do, and it seems to be related to the mutual aid association. But this person is very cunning and always thinking about pink hippos. So he does it intermittently."

Sure enough, after a few breaths, Qi Fei hurriedly handed in his paper and left the classroom.

Lei Ze kept thinking: Huh? The Mutual Aid Association is about to run away, but what does this have to do with Qi Fei? Is Qi Fei behind the scenes?

It's unlikely. First of all, his purpose in coming to the academy should be for the sea of ​​​​fire, just like me, and mutual aid groups were already popular before we came to this academy.

Secondly, if he is really short of money, as a golden elixir monk who refines and refines Qi, he can get money faster by robbing several monks. Why bother?

But if he wasn't behind the scenes, how did he know that the mutual aid association was going to run away?

It seems that this person is not to be underestimated.