Let you be the wall-facer: you turn around and join the Three-Body Problem?

The results obtained surprised everyone.

It turned out that the planet they once lived on had no water, so these three tree people, as children of the big willow tree, naturally inherited its characteristic of not liking water.

Of course, this conclusion was drawn by Liu Chang himself.

Because the three tree people grew from seeds, and the seeds must have come from another planet.

Either an advanced civilization planted the seeds of another planet here, or the other civilization was originally made up of trees.

In short, no matter which possibility it is, it can prove one thing: the planet where the seeds originally lived must have no water.

Later, Liu Chang asked some more information about the observer, and the trigonometric tree said that they were not very clear about it.

They were only one year old, which means that one year ago, they were just part of this big willow tree and could not sing, dance or play basketball like they can now.

So when the observers arrived at Green Star at that time, the three tree people did not have the ability to actively communicate with each other and could only silently watch each other appear on Green Star.

"As far as we can remember, the observers have come here three times, which is about 15 years on your Earth."

"I was born earlier, so I saw him the first time he came. When he arrived here, he seemed to be puzzled and puzzled about the Green Star's transformation, and he eliminated some of the willow trees."

"Then when he came the following year, the Segmented Function Tree had already been born. The Observer Seat was leaning at my feet, and he was talking to himself about some experiment or something."

"Then in the third year, the complex variable tree was born. I could already slightly control my body. I tried to communicate with the observer, but I couldn't make any sound. When the observer saw me, he only said one sentence."

"A new civilization has been born. Unfortunately, the experiment has failed. There is no point in keeping this planet. I might as well give it to you. If you see human beings like me in the future, please treat them well."

After listening to the narration of the triangle tree, Shi Qiang suddenly realized.

"So, this is why you chose to communicate with us after you saw us?"

"Yeah, that's the word...deal."

"We live on your planet, so we naturally have to treat you humans well."

Upon hearing this, Shi Qiang couldn't help but grin.

"Tsk, they are such a kind race. It seems that we humans are too evil."

This is the advantage of a new race, simple enough.

A civilization like this will not last long, after all, the universe is a dark forest.

At this moment, Shi Qiang was suddenly startled.

"Old Liu, come out and see the Buddha!"

Liu Chang and the three tree people looked up at the same time, and saw a white line flying towards them in the sky. The speed was so fast that it even ignited a layer of flames in the atmosphere!

"Here it comes, that's the observer!"

Chapter 165 Observer Tianchen

The observer arrived on the ground very quickly. He did not make the cool appearance as imagined, nor did he have any pretentious lines. His arrival did not even cause the slightest ripple on the planet.

Shi Qiang and Liu Chang looked at each other, and a hint of doubt arose in their hearts at the same time.

"Why is it so ordinary?"

That’s right, the first impression the other person gave to the two was that he was ordinary, ordinary to the extreme.

He has an ordinary appearance, ordinary clothes, and even his behavior seems so ordinary and casual. If he were thrown into a crowd, it would seem that he would disappear in the next second.

This is completely different from the ostentatious feeling that Lin Xuan gave to the two of them.

If Lin Xuan's existence is like the sun, making it difficult for people to ignore his existence, then the man in front of him is more like a fallen leaf, which can make people ignore his existence at any time.

"Could it be... this is what an observer should be like?"

Shock value from Shi Qiang +50!

The man didn't seem too surprised when he saw Shi Qiang and Liu Chang, and said expressionlessly.

"Which Earth are you from?"

Shi Qiang was stunned when he heard this.

"Are there several Earths?"

"Of course, this green planet under your feet was originally an Earth."

Shock value from Shi Qiang +99!

Principal Liu also showed a wave of shock, and then asked.

"How should we...call you?"

For some reason, Liu Chang could not feel the slightest awe towards the man in front of him. It was obvious that the other party was of extremely noble status. However, it seemed that because he and Lin Xuan were too familiar with each other, he had begun to have some different views on the identity of the observer.

"I am the observer of this Earth. You can just call me Tianchen."

"Tianchen?"

"Yes, there are six observers in total. According to the order of wind, mountain, forest, heaven and earth, I am the observer of Planet No. 5, so my code name is Tianchen."

"Then...we should be Earth 4."

Liu Chang quickly reacted to this ranking method. Lin Xuan should be Lin, so he should be the observer of Earth No. 4.

Tianchen smiled. He was deliberately testing the other party's bottom line to see if he knew that there were observers on his earth.

"Lin Xuan?"

Tianchen seemed to be lost in some long memories. After a long while, he spoke slowly.

"Lin Xuan is an acquaintance of mine. He is a very kind person who doesn't like to be in the limelight or show up in front of humans. As far as the role of observer is concerned, is he the most suitable one among the six of us?"

When Shi Qiang and Liu Chang heard Tianchen's description, they were filled with question marks.

"Don't like the limelight?"

"You don't like showing up in front of humans either?"

"Are you sure... this is about Lin Xuan?"

When the two thought about what Lin Xuan had done over the years, they felt that Tianchen was simply talking nonsense. His description of Lin Xuan was not exactly the same, it was completely unrelated!

Tianchen saw that the two of them were looking at him with strange expressions, and thought that they had never seen Lin Xuan, so he smiled.

"That's right. You probably haven't met Lin Xuan yet. He always likes to hide himself and never actively interferes with the development of mankind."

Liu Chang's mouth twitched suddenly.

"Indeed, Lin Xuan did not interfere with the development of mankind. He just unified the Earth, created the Human Union and the Earth Union, and participated in the Wall-Facing Plan against the Trisolarans."

Dashi scratched his head.

"By the way, I still don't understand what an observer is."

Tianchen smiled when he heard this.

"Observer, literally means observing the entire process of human growth in the big container of the Earth, and is responsible for recording experimental data and completing the entire process of the experiment."

"But due to the observation effect... you should understand the observation effect, right?"

Shi Qiang looked confused and looked at Liu Chang next to him, who explained.

"Are you talking about the observer effect in quantum physics, that is, the observation itself will cause changes in experimental data?"

Tianchen nodded slightly.

"In an experiment, controlling variables is the most basic principle. In quantum physics, the act of observing an experiment itself is also considered a variable in the experiment. Therefore, observers are born. We are the only recorders of the experiment and the least likely to interfere with the progress of the experiment."

"That……"

Liu Chang originally wanted to ask what was going on with Lin Xuan, but was stopped by Shi Qiang who was standing beside him.

The two exchanged glances in an instant and understood each other's meaning.

Some unknown changes may have occurred in Lin Xuan's body, but Tianchen doesn't know it now, and the two of them cannot expose Lin Xuan's strange behavior.

"What if the observer interferes with the experiment? In other words, what serious consequences will there be?"

Shi Qiang asked.

This is the issue that he is most concerned about. Lin Xuan has obviously seriously violated the experimental guidelines, but there seems to be no serious consequences yet.

When Tianchen heard Shi Qiang's question, he was stunned.

"In general, it's unlikely that any observer would do that."

"What will happen if we do it?" Shi Qiang continued to ask.

"This doesn't make sense?" Tianchen asked puzzled.

"The purpose of an experiment is to get a result. If an observer actively intervenes in the experiment, it is equivalent to manually obtaining a result. Then what is the meaning of the experiment? If the experiment is meaningless, the existence of the observer is also meaningless."

"What would happen if the observer's existence is meaningless?" Shi Qiang continued to ask.

"You have so many questions." Tianchen complained with a smile, but it seemed that he had not spoken to humans in a long time and was still happy to answer Shi Qiang's questions.

"If the observer's existence is meaningless, he will be automatically erased from this world. Similarly, the failed experimental container, which is your Earth, will also be erased."

Shock value from Liu Chang +99!

"Erase..."

Liu Chang was a little shocked. He didn't expect it to be like this!

Tianchen glanced at Liu Chang.

"I guessed right. You are a biologist, right? Looking at all the bottles and jars you have, it should be easy for you to understand what I mean. If all the cultured bacteria in the lab dishes died during an experiment, would you keep them? Of course you would just throw them away."

When Tianchen said this, he smiled again.

"Of course, Lin Xuan will definitely not violate the experimental guidelines. Otherwise, you should have been wiped out together with me instead of appearing here to talk to me."

Hearing Tianchen's words, a hint of surprise flashed in Liu Chang and Shi Qiang's eyes, but they hid it well and did not show it.

"Who set the experimental rules, or who conducted the experiment, and who is the one who is trying to wipe us out?" Liu Chang asked.

"I can't tell you this." Tianchen said firmly.

"What if there are special circumstances, such as aliens invading the earth? Can't the observer violate the experimental rules and take action?"

Upon hearing this, Tianchen smiled bitterly and pointed at the three tree people in the distance.

"My Earth No. 5 was destroyed by them. Did you see me take action?"

Liu Chang was speechless when he heard this.

Although Tianchen answered his doubts, bigger doubts arose in his mind.

Why could Lin Xuan ignore the experimental rules?

"So your Earth has been destroyed, what are you doing now?"

"I don't know. I was programmed to observe the Earth. Now that the Earth is gone, I really don't have anything else to do. I will occasionally go around the surrounding galaxies and wait for the moment of confrontation."

"Moment of showdown?" Shi Qiang keenly grasped the key information in the other party's words. This was a professional skill he had developed through years of interrogating prisoners.

"Sorry, this is also part of the experimental guidelines... Although my experiment has failed, I still can't tell you." Tianchen said.

"Okay, let me ask it another way. How many Earths are there in the world now?"

"There should be four, Feng Ye's Earth One, Huo Hou's Earth Two, Shan Yue's Earth Three... and you."

"My Earth experiment with Earth Star has failed. Earth Star's Earth was destroyed many years earlier than mine. At that time, the Earth people came up with a Wandering Earth plan, which was to install a super-large engine on the Earth to make it a super-large spaceship that could fly in the universe. The result is predictable. Less than ten years after it flew out, it was hit by a beam of light, and the entire star system was directly destroyed."

"So cruel?" Shi Qiang asked in shock.

"It can only be said that their thinking is too advanced. Moving the position of one's own planet is a very dangerous thing. At least for other civilizations, it is a very dangerous thing."

"why?"

Shi Qiang was puzzled.

No matter how you look at it, moving a planet seems to be a normal operation, just a matter of building a bigger spacecraft.

The current size of the Navigator has already surpassed that of some planets, so shouldn't it be possible for it to move?

Tianchen thought for a long time, looked at the Navigator in space, which was as big as a planet, and then said.

"It doesn't hurt to tell you. Anyway, you have already taken the right path. Moving planets is absolutely not allowed by other civilizations. This is even more dangerous than broadcasting one's own coordinates."

"Moving planets doesn't actually do much harm to the universe, but the bad thing is that if this plan succeeds, it's very likely that the technology tree of this civilization will evolve in another direction... moving stars!"