Doomsday Garbage Sorting System

"it is good!"

Hearing Li Yichen's request, Xiaoyong nodded without hesitation. Anyway, he hasn't been to Tianyuhai for a long time, so it's not bad to go for a walk!

Afterwards, Xiaoyong got a car somewhere, and drove Li Yichen all the way towards the border of Tianyu!
Li Yichen sat in the car, looking at this and that, he felt that this off-road vehicle was similar to the one on Earth, even the gears were the same, especially the speed, which was more than 200 kilometers per hour!
Ordinarily... Tianyu has existed for tens of thousands of years, so the technology here shouldn't be at this level, right?Is it that difficult to get a flying car?

Thinking in his heart, Li Yichen casually asked his own question. Hearing Li Yichen's question, Xiaoyong was also taken aback for a moment, because he had never thought about this question himself. After about 2 minutes, Xiaoyong finally opened his mouth to answer. road:
"Now Tianyu...no one seems to be researching any technology. This kind of car should have been like this tens of thousands of years ago, and it hasn't changed until now! Maybe...because we don't need this thing much, right?"

"That's true!"

Li Yichen nodded. According to the strength of the people here, they really don't need this kind of car for transportation. If they really run, this car can't outrun people!But the question is, if there is no need for a car, why was it invented?

And if the technology continues to be researched, this kind of car existed tens of thousands of years ago. To what extent will the current technology be developed?
However, this time Li Yichen didn't ask his question. He could tell that Xiaoyong probably didn't care much about this aspect. Live a more dignified life by yourself, that is the most important thing!
So if you ask him, you won't get any useful information, so you simply don't ask, and look at the situation here first!

After driving for about an hour, the off-road vehicle drove out of the city. This city has no walls, and a road leads directly to the outside. Outside the city, there are large tracts of farmland!
"This...is the source of your food here?"

Li Yichen looked at the farmland on both sides of the road and asked.

"kindness!"

Xiaoyong nodded, then clicked on the navigation:
"We were in the central city just now! It belongs to the gathering place of our humans, and more than 60.00% of the people live in the central city!"

"These farmlands are located between the central city and the first ring city. In addition to farmland, there are also farms, fishing grounds and so on! Anyway, they are used to provide all kinds of food!"

"Going forward, you will see the first ring city, the central city is circular, and the first ring city is circular, surrounding the central city in a complete circle! Outside there are second ring city, third ring city, fourth ring city Ring City and Five Ring City! Then we will arrive at Tianyuhai!"

"Among these ring cities, there are many factories, and the people living in them are factory workers and people working in farmland, farms and fisheries! They are responsible for processing all kinds of food and sending them to the central city!"

"Oh!"

Hearing Xiaoyong's explanation, Li Yichen nodded. This arrangement seems to be very suitable for a place like Tianyu!The strong are all concentrated in the center, and they can defend against foreign enemies while living, while the people outside are responsible for providing their daily needs. Judging from the scale of the farmland, Tianyu can be completely self-sufficient!
"It would be great if the domain gate of Tianyu could be closed, life here would be safer!"

Li Yichen couldn't help but said.

"That's true! But the domain gate cannot be closed!"

Xiaoyong nodded and said, obviously they also know that if the domain gate is closed, no one will be able to enter their Tianyu, so it will be extremely safe!
Galloping all the way, it took about six hours. After passing a few rounds of the city, Xiaoyong finally raised his head to the front and said:
"The five-ring city is ahead, and after passing the five-ring city, it is Tianyuhai!"

Li Yichen cheered up, and immediately looked forward. Now he can see the buildings of the five-ring city. These buildings are generally not high, and they are all around six or seven floors. After all, the ring city is actually very big, because it takes a circle In the whole circle, there are not many people living there, so there is no need for such tall buildings!

"The five-ring city is different from the previous four ring cities. Half of them are civilians, and half are the army! The civilians are responsible for fishing seafood in the Tianyu Sea, refining sea salt, etc., while the army is used to defend the Tianyu Sea. of!"

Xiaoyong pointed to Wuhuan City and said.

"Didn't you say that only that door is the entrance to Tianyu? Why are there still troops stationed here?"

Li Yichen asked with some doubts.

"Because no one is sure about the situation in Tianyuhai!"

Xiaoyong shrugged his shoulders and said:
"If you enter the fog, you will lose contact, so we don't know what is in the fog, so although we have never found anything unusual in the fog of the Tianyu Sea, we have always left troops to defend! "

"kindness!"

Li Yichen nodded!No more questions!
They didn't stop at the Fifth Ring City, and Xiaoyong's car seemed to be recognized by those troops, so they passed the Fifth Ring City unimpeded and came to the beach of Tianyuhai!

The seaside of Tianyuhai has also been developed by the people here, bathing beaches, fishing grounds, salt fields, etc. can be seen, and there are even ports on the seaside, where a few not very big fishing boats are parked!

After all, the range of Tianyu Sea without fog is not very large, so there is no need for too big boats, and those fishing boats just enter Tianyu Sea occasionally to catch some fish!

After Li Yichen casually looked at the boats, he turned his attention to the Tianyu Sea. He jumped out of the car, went to the seaside, stretched out his hand to taste the seawater, and then put it in his mouth to taste it. It was no different from the seawater of the earth. .

Looking up, it was exactly as Xiaoyong said, the sea in the distance of Tianyuhai was covered by a thick white fog, the white fog was so high that it reached the sky directly, between the blue water and the blue sky , blocked by white, it looks very strange!
"Xiaoyong! There is no sun in the sky, where does the light come from?"

Only then did Li Yichen realize that he didn't find any celestial bodies in the sky!So he turned around and asked.

"do not know!"

Xiaoyong shook his head:
"It's a good thing to have light anyway, it doesn't matter where it comes from. Moreover, Tianyu is different from the source world outside. There is no night in Tianyu, and it will always be like this!"

"what?"

Li Yichen was taken aback for a moment, then looked up at the sky, is it always daytime?It is similar to the polar day of the earth, but the temperature here is very good, neither hot nor cold, and there is no wind or waves on the sea, it is quite calm, like a lake.

"Can we get a boat and let's go to the sea to see?"

Looking at the mist in the distance, Li Yichen suddenly turned around and asked...