According to the information we know now, level 7 is either very prosperous and has a lot of people trading in the system mall, or there are few people at all, and there may only be a few high-level civilizations.

Yang Zhou naturally hopes to have many system hosts, so that he can also earn 10 billion experience points faster.

[The products on the shelves, Chaotian grapevines, after testing, Chaotian grapevines are the subsequent evolution varieties of metal grapevines, crowding out the metal grapevine stalls, and the products on the shelves this time do not occupy the stalls. 】

What Yang Zhou didn't expect was that there was an unexpected joy, it turned out that the metal vine could become a Chaotian vine after evolving?

Probably because of the ontology, it was all related to the vine at the beginning.

In terms of selling price, Yang Zhou did not hesitate to choose a tree with 500 million experience points, and marked a gene lock.

Hosts with space needs should be excited, right?

Yang Zhou put a lot of genesis mushroom characteristics in the plant introduction, as well as his own straight growth and non-stop spurting.

Yang Zhou waited for a while, but no one bought it, and just as he was about to withdraw from the system space in disappointment, new news came from the system.

"Wow, can the seller message the seller? That means that merchants don't need to search for friends, and they can contact friends in the mall. Yang Zhou exclaimed.

Dave is also level 6, and neither of them knows about it.

Yang Zhou hurriedly opened the message to see what the other party said, and first checked the other party's profile.

Level 8 host, Levi.

Entering the other party's mall, Yang Zhou saw that there were things in 5 stalls, and they were all very high-end products.

From these products, Yang Zhou even speculated that the world in which Li Wei is located has a bit of a cyberpunk feeling.

Because Yang Zhou saw plant hand and foot prosthetics, genetic beast plants, body gene enhancement tree level 3, and meta-universe consciousness reading plants.

Let Yang Zhou open his eyes, it turns out that plants still have such a development direction.

He quickly opened the chat interface to see what the hell this guy was talking about.

Li Wei first congratulated Yang Zhou and said, "Congratulations, you have developed a level 7 plant in just level 6, which is not easy!" You are very talented. ”

Yang Zhou didn't reply for a long time, and Li Wei continued: "I just planned to make friends, of course, I am also interested in the plants you sell, but I need to customize some small functions." ”

At this time, Yang Zhou finally replied, and he didn't know what kind of person Li Wei was, whether he was an Oriental or a Westerner, and he had no concept of anything.

"Thanks for the compliment, don't know what customization features you want? Modified plants, also do not occupy the stall? Yang Zhou asked.

"Of course, so plants can continue to upgrade, and we must choose a good development direction at the beginning, if there are other plants outside of our own development direction, sometimes the harm outweighs the benefits." Levi said.

Yang Zhou thought of the hybrid rice he put on, and it seemed that he still had to find a way to continue upgrading in the future, and he couldn't waste this stall.

Then Yang Zhou and Levi discussed how to upgrade the plant.

Levi thinks that the vine should grow to at least 300 kilometers or more, because then it can grow into the orbit of a satellite in space.

Looking at the introduction, Li Wei did not find that Yang Zhou gave specific data, which may also be the reason why it was not sold.

Yang Zhou was also so excited, he forgot about these data, and checked the growth limit through the system, and finally felt a little embarrassed, the original growth limit was only more than ten kilometers!

Fortunately, as long as he didn't say it, no one would know, so Yang Zhou decided to upgrade the Chaotian vine and turn it into a real space elevator-type plant.

Now the vine has this potential, its leaves are huge, and it will be controlled by core genes to choose how to spray.

What's more, the Chaotian vine transformed from the shell material of the Genesis Mushroom is very lightweight.

The leaves have an internal structure that can hold a lot of gases, some of which are hydrogen.

Everyone knows about hydrogen balloons, so they can actually float and fly.

Modifying Chaotian Grapevines was not something that could be achieved in a short period of time, so Yang Zhou simply consulted with this newly recognized high-level host.

For example, there are not many level 7 and level 8 hosts, whether everyone is in the same cosmic plane, whether there will be a chance to meet in the future, and so on.

The answer is naturally no, Yang Zhou learned that there are many hosts in the system, but everyone has never had the opportunity to meet in his life.

Unless the system keeps upgrading, breaking through the cosmic plane, and freely shuttling through various universes, there may be a chance to meet.

Levi reminded very seriously: "In addition, you must pay attention to the existence of the Great Filter of Civilization, I have contacted many hosts, and found that they have only broken through the Great Filter to upgrade to level 7 or above. ”

"Those hosts who can't break through are likely to die in front of the big filter."

Yang Zhou suddenly became solemn, of course he had heard of the big filter, but he didn't know if the big filter experienced by the system host was induced by the system or something that every civilization would experience.

To put it simply, based on the current knowledge of physics, chemistry, biology, cosmology, and sociology, we believe that the Milky Way should have been full of interstellar civilizations that have colonized everywhere, but not only can we find no evidence of alien visits on Earth, but we also don't see the slightest fleeting trace of alien spacecraft or engineering in telescopes - not even a single radio signal can be received.

At this time, a scientist proposed that it is not that we cannot see it, but that civilization will be destroyed for some reason when it reaches a certain stage of development.

Of course, there is another reason, that is, scientists have proposed 9 stages, which represent all the stages that the development of intelligent civilization will go through.

For example, a planetary system that is suitable for the first place (there is organic matter and potentially habitable planets);

self-replicating molecules (e.g., RNA);

simple (prokaryotic) single-celled life;

complex (eukaryotic) single-celled life;

Sexual reproduction;

multicellular life;

Animals with large brains and tools;

We are currently at this stage;

Interstellar Colonization Expansion.

We didn't find any other aliens or it could be that they were too primitive to see them.

"And what will be the impact of the big filter on our system?" Yang Zhou asked.

"I can't say for sure, what I experienced was a meteorite crisis, scientists observed that there is a meteorite we call Apophis, it may hit the planet I live on in 2029 and 2036, and finally in 2036 I successfully resolved the crisis, but because of the many small meteorites left behind, our civilization was almost reshuffled, some technology was disconnected, and slowly developed into a cyberpunk type of civilization." Levi said.

Yang Zhou immediately searched for Apophis with a search engine, and found that this meteorite was discovered by scientists in 2004, and the probability of hitting the earth was calculated at that time.

Later, after science and technology became more developed, scientists observed the meteorite again, but the potential risk was still not ruled out.

"In my world, there is also Apophis!" Yang Zhou gasped and replied quickly.

"Hehe, don't be too nervous, I know several hosts, and I haven't encountered meteorites, they also have Apophis there, but by 2036 they are still doing well, but it is a crisis for other reasons, you must know that in the universe, intelligent life is very dangerous, and when technology develops to a certain point, you can access the soul or spiritual power."

"This is a kind of energy, which can be harvested at one time, or it can be obtained slowly in a long stream, and when they encounter a civilization that also knows the secrets of the soul, their first choice is likely to destroy the civilization they discovered!"

"So for our system hosts, earning experience points to upgrade is one thing, and on the other hand, we have to keep arming ourselves to meet the arrival of that crisis!"

"This may be our luck to get the system, or it may be the misfortune to get the system, I have discussed with other high-level hosts, when upgrading to level 7 or 8, it is likely that the system is sending broadcasts to guide the arrival of higher civilizations, of course, this is just speculation, there is no evidence to support it at present."

"You just need to remember that at the seventh level, be prepared for all defenses, we are the chosen ones with a system, and it is impossible to be inferior to other civilizations."

Yang Zhou suddenly felt that his head was a little messy, which broke his previous planning route again.

Originally, he wanted to compete with the creatures of the beautiful country, let them explode with greater potential, and research special plant genes, and then he used the replication spores to replicate, but suddenly heard that the "big filter" existed, how could he still be in the mood to think about anything else.