The white light flashed, and the rat king, who had turned into an ordinary mutated creature, also became black carbon.

The others were fine, and the eyes of the six lizards looking at Zhang Le were full of deep fear.

Zhang Le turned his gaze to the two rat king guards on the ground. The screams of "twitter" almost pierced the transparent roof of the gymnasium.

Zhang Le did the same and harvested two more black crystals, which is very strange, only wheat seeds have this effect. Shen Wei picked up two of them, handed one to Zhang Le, and picked up the other one himself.

Not only Zhang Li and Shen Wei were two humans, but even Sandy, Ice Worm and Lizard had never seen such a thing.

Shen Wei looked left and right, and didn't find anything, this is an ordinary crystal stone, translucent, no smell, standard hexahedron, different sizes, just like a well-polished crystal stone.

"This may be a life energy crystal, the life essence of a high-level creature, I have heard the ancestors say before, this kind of embodied energy body can be used as the energy source of some life machinery, for example, our spaceship." A lizard approached with its head poked its head out and said to the crowd. The ancestor in its mouth is the first generation of lizardmen who came to Earth.

"If that's the case, the queen of the Kubu tribe must know, and you can ask her when you go up!" Shen Wei said to Zhang Le.

Everyone nodded, but no one spoke about it.

Zhang Le remembered Queen Sindir's French wet kiss, and had no plans to see the queen again for the time being. Sandy is definitely respectful of the Kubus. The Kubu people don't have a good face for lizards. Ice worms are newcomers, and today there are two child laborers.

"I'll ask Jill in a few days." Zhang Le was silent for a while and said.

The task of eradicating rats was successfully accomplished.

This mission also reminded Zhang Le that human beings are definitely at a disadvantage in this great biological evolution. The vast majority of humans are perhaps too comfortable to live within the walls of extreme environmental stimuli, and they will never be able to become high-level creatures. At least for now, it is difficult for lab-created mutants and enhanced humans to cross the threshold of high-level creatures.

The other friends rode the bird back to the city in the sky.

Zhang Le went to the human gathering area alone, and the purpose of his return was not to invite merit, but to guide the planting of new plants.

In the surprised eyes of Xie Fang and several humans, Zhang Le not only took back all the wheat seeds given to Xie Fang, but also pulled out all the wheat seedlings that had just grown. The wheat seed was too weird, and Zhang Le didn't dare to leave it to the humans in the Huanggang gathering area.

"Chestnuts ripen in 30 days, are not afraid of severe cold, can be planted outdoors, and more fertilizer. Also, the mutant rats have been exterminated! After Zhang Le finished speaking, he hurriedly left the human gathering area without even waiting for everyone to respond.

If Sky City hadn't stayed here, this small human gathering area might have disappeared. This group of mutant rats not only has top-notch combat power that humans cannot eliminate, but also has a social system similar to human civilization, and they will definitely not tolerate the existence of a human gathering area. At the same time, Zhang Le was afraid, but he also felt his own insignificance, there are so many gathering areas in China, how many similar stories are happening. Where are his father and mother now?

"Sister Xie, is what he said true?" A short, big-eyed young man asked.

"It's a pity that this ship can't stay longer, I have a hunch that they are the hope of humanity. I can't doubt his words, have you ever seen a seed that sprouts in half an hour? She looked at the huge black shadow in the sky and said in disappointment.

Half an hour later, the spacecraft resumed its voyage.

On the morning of the second day, the city in the sky came to the sky above Poyang Lake. The weather in the Poyang Lake area is cloudy and there is no snow on the ground. The north is very large, and the temperature is seven or eight degrees above zero, but looking at this trend, I am afraid that heavy snow will come in a day or two.

Zhang Le didn't pay attention to the loudspeaker on the ground for the time being, although it was an inviting voice coming from inside.

Flamingos and bald eagles still had to hunt in the water below, and this time Sandy accompanied them. Because, Jill is up. Zhang Le wanted to ask her about the black crystal.

The two sat on the seats on the edge of the spaceship, and Zhang Le took out the black crystal and showed it to Jill to see.

"This is a life energy crystal, a source of energy. However, Brother Zhang Le, it's best not to take out this thing, if other intelligent races know about it, it will definitely be unpleasant. Jill was taken aback, then affirmed in certainty.

"Why?"

"Unless it's an undying enemy, or an inherently evil species, no one will wipe out a high-level species of intelligence." Jill said.

"Joke, as long as you want to survive, there are countless enemies, I don't believe that this kind of thing is rare in the universe!" Zhang Leke didn't believe in this.

"At least in our plant planet is rare! The vast majority of living things eat plants, and many races coexist peacefully. How did you get it? Jill said.

"A seed transformed by the World Tree can grow in the body of a mutant mouse, and this is the fruit that bears! Is this normal? Zhang Le said, in fact, he wanted to know Jil's opinion.

"This ...... It's not very special, the World Tree will amplify its inherent ability according to the characteristics of the seed, and I guess that this seed must have a part of its genes that hate mutant mice, so in the process of being modified, it has the ability to kill mutant mice. That's my guess. By the way, is there any such seed in the recipe of the mutant mouse? Jill tilted her head and analyzed.

Zhang Le's face turned a little green, as if this was really the case. If you put it that way, it doesn't seem like the seed is very useful. But considering that the genes of mice overlap with those of many organisms on Earth, it is difficult to draw conclusions.

Although he was a little disappointed, this success was also a new way of thinking, at least when it came to dealing with high-level creatures, Zhang Le was no longer clueless.

Although the scenery is good in the sky, everyone is a little tired after a long time. At ten o'clock in the morning, Gianna, Xue and Phil got up one after another. When they saw the big lake below, they asked to go down and play.

Zhang Le was worried about the safety of several people, so he also followed, and finally on a small island in the lake, the six original members of Sky City, the six lizards, Jill and the five siblings of the ice worm all came to the ground.

After seeing Zhang Le's ultimate killer move, the lizards were much more diligent than before. Without Zhang Le's command, they emptied the snakes, insects and ants on the island, and caught more than a dozen fat wild ducks by the way.

Each wild duck weighs about thirty pounds and can't fly, but its combat effectiveness is not weak. Thick beaks, sharp claws, and thick feathers are all essential to their survival.

It was still Zhang Le and Shen Wei who packed up the food. Sandy is in a good mood, and the environment of Poyang Lake is like home for Sandy. He rarely offered to help and caught some big fish with his tentacles. He rarely eats animals, and absorbs energy from the earth and wine, but is acceptable to fish.

Still, Zhang underestimated the government's willpower.