A villa on the outskirts of Kyoto has a strange interior decoration, with sound-absorbing tiles on the walls, shock-absorbing sponges on the floor, no sofas, no beds, and not even a daily home. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

The master bedroom was transformed into a dust-free laboratory, the second bedroom was transformed into a negative pressure laboratory, the guest room was transformed into a light-free laboratory, the cloakroom downstairs became a machining workshop, the maid's room became a stabilization laboratory, the garage became an impact laboratory, and the storage room became a chemistry laboratory......

In the impact laboratory, Meng Yang carefully placed a small box of freshly made liquid on the experimental table, which shimmered with a brilliant azure light, as dazzling as a sapphire.

Meng Yang dropped the bulletproof glass cover, adjusted the output speed of the high-pressure impact hammer, and quickly exited the room, gently pressing the remote control in his hand through the bulletproof glass door.

At a speed that was indistinguishable to the naked eye, the hammer slammed into the workbench almost at the same time as the remote control was pressed, and the royal blue liquid immediately turned into flying shards, coating the entire glass cover.

"Still doesn't work?" I can't remember how many times this is the first time I have failed, Meng Yang doesn't know if he can continue to persevere, if it weren't for the successful product in front of him, he would have to wonder if this bulletproof fluid really exists.

"Meng Yang, you failed again?" Little Dotted squatted in the hallway.

"yes, it feels so hard to re-enter a whole new field!"

"If you're upset, my shoulder can be borrowed from you." The little little tail wagged behind him, and kept sticking out his tongue and said.

“...... I know you mean well, but why does that sound weird? Meng Yang glanced at the big hairy tail behind Xiao Budian who was doing a pendulum movement...... It feels so strange to be comforted by a dog......

"You humans are really entangled, can't there be pure feelings across species?"

"Uh...... Little bit, you're not fit to be a philosophical dog, really! ”

"You're really good at fighting dogs, okay, then I'll wait for you to fail next time." The little one lay down and rested his chin on his paws.

"Forget it, let's read the book first, and then study it." Meng Yang left the laboratory, took Xiao Budian, and drove back home.

This newly prepared laboratory is not far from Meng Yang's home, just over a kilometer, and he usually reads books at home, and once there is something that needs to be verified or tried, Meng Yang will come here to do experiments.

On the way home, Meng Yang asked in his head.

"9527, now that I have learned so much in the second-year course, can I disclose in advance what the final exam will be?"

"Second Grade Exam: Creating a Closed Ecological Circulation System with Functional Life."

"Ecological circulation system ......" Meng Yang couldn't help but groan, the content of this exam is a bit unexpected, Meng Yang also thought that the final exam of the second grade might be to create a complex functional body early, such as urban complexes, entertainment complexes, leisure complexes and the like.

"What are the scores?"

"The higher the complexity of an ecosystem, the more species it contains, the higher the score; The longer the system is self-sustaining, the higher the score; The better the self-sustaining stability of the system, the higher the score; The more resistant the system is, the higher the score. ”

"The complexity is easy to understand, how to explain the self-sustaining time?"

"Exam Question: Create a closed ecological circulation system with functional life, closed means that this system must be isolated from the outside world to achieve material exchange, it must form a completely closed environment by itself, and the longer the environment lasts for itself, the higher the score."

"If you think of the earth as an ecological cycle, the earth is actually a closed system, but the earth's ecosystem is powered by solar energy. So does the closed ecosystem of the final exam require energy isolation? ”

"The energy does not need to be isolated, but after the design of the whole system is completed, no human intervention and adjustment can be made, and the self-sustaining time of the system is a key indicator."

“ok！ I understand. ”

If you digest 9527, you can probably think that the final exam is to build a world that is enclosed in a glass cover, and there will be all kinds of creatures in this world, including plants, preferably animals, and even insects, bacteria, and other creatures, in short, the more kinds of organisms, the better, and the more varieties the better.

Then let the world of the glass cover run autonomously, test the length of time for the world to run autonomously, in the middle, the sunlight can pass through, and the glass cover can carry out daily photosynthesis, but carbon dioxide, air, water vapor and the like are not allowed to enter and exit.

In this case, if the system can run stably for a long enough time, then the final exam will definitely be able to get a relatively good score.

Similar experiments have actually been done in other countries, and since the launch of satellites and the landing of humans on the moon, interstellar migration has actually been on the desk of some superpowers.

Scientists in many countries are studying the feasibility of interstellar migration, such as establishing a permanent base on the moon, so that astronauts can survive on the moon base for a long time.

According to the scientists' plan, it is intended to build a completely enclosed ecosystem on an extraterrestrial object, and then use solar energy to drive the ecosystem to operate autonomously.

In order to test this purpose, in 1991, American scientists built a miniature artificial ecological circulation system in the desert, and this ecosystem was named Biosphere 2.

With an area of 12,000 square meters and a volume of 180,000 cubic meters, Biosphere 2 is a huge steel and glass shed, fully enclosed structure, and even the ground is sealed with steel plates. There is no exchange of matter and species with the outside world, and the only exchange is the input of sunlight.

Biosphere 2 has 4,000 species, including 3,000 species of animals and plants, and 1,000 species of microorganisms.

When designing Biosphere 2, many factors were taken into account in advance, such as the transfer of food chain, the transfer of energy, the production and consumption of oxygen, the production and consumption of organic matter, the decay and decomposition and reuse of organic matter, the production and life of human beings, the impact of human beings on species, and so on.

For example, considering that over time, species are affected by natural competition and elimination, and there are population fluctuations and even species extinction.

In order to avoid a ripple effect of natural obsolescence that leads to the collapse of the entire system, all aspects of the situation are carefully calculated.

The population of many species is designed with sufficient redundancy to ensure that the whole system can withstand the cumulative oscillations of the variables generated by the system.