In the middle of the night, when everything is silent, the moon in the sky is sometimes covered by dark clouds.The light was dim, and it was impossible to see the appearance of the sky and the earth clearly.

The bachelor old Zhang shivered while hiding under the quilt, and the sound of the door made him tremble.

At this time, outside the door, Li Cixin grabbed the doorknob and twisted it, only to find that the door was locked from the inside!

someone!he realized.

He knocked on the door very politely, with a wicked sense of humor, and his voice was very rhythmic.

Boom!Boom!Boom.

Now, Lao Zhang in the house was even more scared. He thought to himself: Oh my god, what is this thing that knocks on the door? Don’t I encounter some mountain elves and wild monsters.

Seeing that there was no movement from the people inside, Li Cixin began to hit the door with more force.

Bang, bang, bang!

The thin door creaked and screamed unbearably, and the dust kept falling with the movement.

Finally, under such a tense and oppressive atmosphere, Lao Zhang couldn't stand it anymore.He got up from the bed as if losing his mind, crawled to the door, and moved the stool to block the door. Maybe he didn't think it was enough, so he piled up all the things he could move in front of the door.

Old Zhang was panting heavily, leaning against the pile of debris, wanting to cry but no tears, so he begged his grandpa to sue his grandma again.

Time passed by like this, and the movement outside the house finally stopped.

'have they gone? 'Lao Zhang thought to himself.He grabbed his old vest and tried to wipe the sweat from his brow, only to find that even his clothes were wet.There was also a smell of urine in the pants.

But Li Cixin didn't want to let him go so easily, Li Cixin suddenly thought of a good way, and started to carve something on the wall with his claws.

Lao Zhang, who had already calmed down a lot, became tense again when he heard the strange sound coming from outside again.

The sound was like pulling the blackboard with your fingernails. It sounded sour and made people have toothaches.This torture lasted for about ten minutes, and finally everything outside the house returned to calm.

Lao Zhang also fell into a deep sleep unconsciously. When he opened his eyes again, it was already dawn, and the sunlight gave him courage.

He carefully removed the sundries blocking the door, and saw that the locks had been disengaged.With trembling hands, he opened the door.

What I saw were the dismantled garbage trucks.He walked out the door and looked around. When he looked back at the house he lived in, the words on it made his legs weak instantly.

I saw impressive engravings on both sides of the door and on the wall:

"Dragon King of the Yangtze River, come here for a visit. Dirty river water, the world cannot tolerate it. Be careful!"

As for Li Cixin, who pretends to be a ghost, after wandering around in the middle of the night, he has already passed through the waters of Jinling and reached the upper reaches.

The place.

And new places still have new problems.

When Li Cixin passed a river bank, he found a lot of dead fish floating on the water.

The water near here is also gray-brown in color and has a pungent smell.

Li Cixin followed the water source to find it, and sure enough, he found a drainage pipe more than ten meters upstream, and the gray-brown sewage was still flowing out slowly.

Seeing that there was no one around, Li Cixin dived into the bottom of the river, picked up a big rock, blocked the pipe, and then took a handful of river mud and mixed it with the hay on the bank to paste the gap.

Just when he wanted to climb ashore to see what was going on.

He suddenly heard someone coming this way, and he quickly hid in the water.

Two grown men came, standing on the embankment of the river, both in suits and leather shoes, looking like elites.Among them, the younger one still wears a pair of glasses, and has a gentle face.

Li Cixin in the water was engrossed. Hearing the conversation between the two of them, the man wearing glasses spoke first:

"Mr. Zhao, this is the sewage pipe repaired according to your order. This place is hidden, and most people will not notice it."

"Well, yes, you did a good job on this matter."

"But..." the man wearing glasses hesitated to speak, and finally asked, "But Mr. Zhao... What if our factory's sewage discharge has been like this, and the environmental protection department finds out?"

Mr. Zhao sneered and said:

"Xiaotian, you are still too young. In recent years of reform and opening up, the country has relaxed many policies on private enterprises. It is time to make money, and everything is in charge of the economy. The Environmental Protection Bureau can only turn a blind eye and close one eye. Needless to say, we still have some connections and friendships, such a small indicator is light, but it's all worthless money!"

After finishing speaking, he patted the assistant on the shoulder a few times with great earnestness, and shortly thereafter, the two turned around and left.

Li Cixin crawled out of the water and looked at the tightly sealed pipe opening. Fortunately, these two people did not notice.

In this way, Li Cixin waited until night, and he repeated his tricks and climbed ashore.Run to the factory not far away.

The closer he was to the factory, the stronger the bad smell, and as an animal, it was even more uncomfortable, and he was holding his breath most of the time.

At this time, the workers had already left work, and there were only two security guards standing guard at the door, who were also playing cards boringly.

Li Cixin easily crossed the wall and entered the factory. He broke the door lock, tried his best to restrain the decibels of his voice, and crept in.

He looked around and saw that there were many chemical reagents stored in the factory. Li Cixin was not a professional, so he didn't dare to touch them.I'm afraid that if I accidentally cause a big explosion, I will implicate myself in it.

What can be done?Of course it's still the old routine, first destroy something that can be destroyed.

Within a few minutes, the two security guards at the gate of the factory discovered the movement in the factory.He quickly put down the cards in his hand and rushed over in a hurry.

Seeing that the door was ajar and the lock was broken lying on the ground.The two looked at each other, then hurriedly opened the door and walked in to check.

Before they could react, a giant tail struck from above, knocking the two of them to the ground.When the two got up enduring the pain, they were dizzy and saw a huge body, dragging its long tail, disappearing into the night extremely quickly.

This time Li Cixin was still pretending to be a ghost. He just hoped that these factories could discharge sewage according to the standard, and he didn't think about cutting off the occupations that these people depended on for survival.He just wrote some similar words on the ground with paint, hoping that the other party can be restrained.

For the next week, Li Cixin did not leave here, and went ashore every night to check the situation.It turned out that the paint words he wrote had been erased, and it was still as if nothing had happened to the people in the factory.

Li Cixin was also angry, and made trouble several times, but the result was good. The other party seemed to really believe the rumors about the Dragon King of the Yangtze River.

After all, in the 80s, when the political and economic revolution had just gone through, many ghosts and monsters appeared one after another, such as talismans, qigong masters, Zhuantai pills, and so on.

Seeing that the situation had subsided, Li Cixin started a new journey.

All the way up the river, the legend of the Dragon King of the Yangtze River was also brought along.

Unknowingly, it has been the fifth year since he came to this era, and he has already entered the 90s.With his efforts over the years, although the environment of the entire Yangtze River has not improved much, it has not deteriorated too much either.

On the contrary, the legend of the Dragon King of the Yangtze River became more and more magical.

Some people say that he is a Yangtze River monster; some witnesses say that he is a big crocodile with four big claws; some even say that he is the Dragon King. After all, whoever has seen animals and water monsters can write; If a ship is overturned and a factory discharges sewage indiscriminately, it will be destroyed even if it is hundreds of meters away from the water.

This person can go ashore, enter the water and write, he is definitely the Dragon King!

For this reason, CCTV also made a special episode of this program "Uncovering the Mystery of the Dragon King of the Yangtze River". The photos used were still those captured by someone when he floated to the surface of the water to take a breath.The pixels are so blurred that if you say he is a dragon, he probably won't believe it.

Li Cixin watched with relish the information about him that the human society had treated him that the system circulated to him.

I even noticed that on many days, people would burn ingots and place tributes on the banks of the Yangtze River every year and festival.It is he, the Dragon King, who worships.

For this reason, Li Cixin was also speechless, but he was also thankful for it. Fortunately, people believed his deception, so that the waters of the Yangtze River could not be further deteriorated.

In the past five years, Li Cixin's achievements in protection are not bad. He found that due to the preservation of fishery resources, the number of finless porpoises has increased a lot, and he will encounter a small population every once in a while.

As for the number of baiji dolphins, the system told him that there had been a natural increase of twenty in the past five years.He even spotted the endangered white sturgeon twice.All the efforts were not in vain.

However, the revolution has not yet succeeded, and he will continue to stay here.Next year will be the start time of the world famous Three Gorges Dam. This project can be called changing the future of the Yangtze River. I don’t know how much impact it will have on the migration of animals.

Li Cixin sighed, he understood that there were many things he couldn't do.For example, he can't and can't prevent the establishment of water conservancy projects, limited by the regulations of the system, he can't interfere too much with the historical process and the overall needs of mankind.

Just like what the system told him, it was originally a genetic system made by humans, essentially for the purpose of preventing humans from being wiped out in StarCraft in the future, and everything is based on people.

Do what you can, try to let these rare animals keep the kindling for more than [-] years, and let the rich China protect them.

In the next ten years, Li Cixin traveled back and forth on the Yangtze River countless times, upstream to Sichuan and Shu, and downstream to the estuary.

He is fighting against the pollution and changes in the Yangtze River Basin. Of course, he is not fighting alone. In fact, some officials have been working for the ecology of the Yangtze River.Every time he met these people, he couldn't help but want to say hello to them.

Li Cixin is too lonely. For more than 20 years, except when he sleeps and goes ashore, he has been a living body wandering in the muddy river.

Looking at the bungalows on the shore into high-rise buildings, incandescent lamps into energy-saving lamps, people's lives are getting better and better.Garbage in the Yangtze River is gradually decreasing. At the beginning of the 21st century, with the implementation of the fishing ban system in the Yangtze River, the environmental protection department gradually became more important.The ecological environment of the Yangtze River has improved a lot.

Li Cixin's body has entered the aging period, and he will not live for a few days.When he left, an old and scarred finless porpoise stayed by his side.until he closes his eyes.

"Mission completed! Protect the baiji dolphin. The degree of difficulty is grade A, and the degree of completion is grade A.

Reward Genes: 1 Echolocation Gene Fragment,

2 Diving functional gene fragments

3 hemibrain slow wave sleep gene fragments,

Please pay attention to check! "

When Li Cixin opened his eyes again, what he saw was the ceiling of his small room.

He accepted the genetic modification in a daze, and asked:

"System? What is the half-brain slow-wave sleep gene?"

"This gene means that half of the brain sleeps and the other half works. Currently, it is only found in aquatic mammals and birds. In order not to be drowned, aquatic mammals have evolved a state where the brain sleeps and rests while the brain is active. Birds It’s for hazard prevention and for rest during long-distance flights.”

Li Cixin was overjoyed: "There is such a good thing, so I can keep writing questions in the future?"

System: "...Theoretically, it is possible, but I don't know if half of the brain's work will affect arithmetic and memory. The host can try it on its own."

"Okay, let's start!" Li Ci closed his eyes, and then he only felt severe pain in his brain, nose, and lungs, and he passed out after not holding on for long.

When Li Cixin got up early in the morning, the first thing he did was to test the effect of genetic modification.

He felt the ultrasonic waves emitted from his nose, which spread out to the surrounding environment. The sound waves passed through the wall, and some of them were refracted back. Even without opening his eyes, he still knew the size of the entire room and the arrangement of objects, and the rest of the ultrasonic waves continued to spread out. The situation within a radius of [-] meters is depicted like another computer three-dimensional space.

Then he discovered that after these sound waves passed through the human body, it was like taking a B-ultrasound to clearly illuminate the human internal organs and bones.

Li Cixin quickly withdrew his abilities, thinking that this was just an experiment, not a perverted voyeurism.

The results of the subsequent rest experiment between the left and right brain were not satisfactory, because the management areas of the left and right brain are different, so when he uses the left brain, it does not have much impact on arithmetic and memory.

With the right brain, the whole person tends to become irritable and emotional, and is more sensitive to art and philosophy.

As for the diving ability, there is no need to try it for the time being.

Li Cixin got up and took a shower, but realized that it was too late, so he hurried out without breakfast.Fortunately, I caught the nearest bus.

When Li Cixin entered the classroom, he was about to put away his schoolbag when he suddenly noticed a box in the cabinet. Out of caution, he used ultrasonic waves to detect it.

It turned out to be a small cake!Who released it for him?

Li Cixin raised his head and looked around, and found that the girl who scolded him yesterday was called He Yunnan. The other girl looked back at him, and immediately lowered her head, pretending to be doing homework.

There was also a letter pressed under the cake, Li Cixin tore it open and looked at it, he knew it was the other party's letter of apology.

But now that I am losing weight, high-sugar foods like cakes must never be touched!

It seems that it is not good to eat it for others, so I didn't care about it, thinking about taking it home and giving it to my aunt and the others.

He Yunnan, who was diagonally above, kept looking back. Li Cixin looked at her, nodded expressionlessly, and signaled that the apology was accepted, so the other party stopped looking back.

In the evening, after evening self-study, Li Cixin got off the bus with a small cake and started to walk home. Suddenly, he heard cries for help coming from the park next to the bus station, and he hurried over to check.

I saw two children ups and downs in the artificial lake.Without saying a word, Li Cixin put down his things and jumped in.

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