Under normal circumstances, the cost of farming underground is extremely high, because opening up underground space requires considerable costs. Another point is that the growth of plants requires photosynthesis and artificial simulation of sunlight requires too much energy.

　　 But for the infected person, these are not really big problems. Opening up underground space is not a big problem for them.

　　 Randomly separate hundreds of people to practice soil attribute techniques, and they can easily manipulate the underground soil. Form a vast space. Just compress the underground soil to the corresponding position according to the structure above the architectural drawing. It can ensure the stable structure of the underground space.

　　 As for the second point, the plants they grow do not need sunlight. The underground lights are just for people to see things clearly. There is still a big difference between light and sunlight. Even if it is a light brighter than the sun, as long as it is not a Yuba, it will not feel hot when it shines on it. Energy consumed. It is also much smaller than simulated sunlight.

　　 "By visual inspection, this layer is about 15,000 acres of land. The scale of planting is not reluctant! There should be other layers underground. This amount of food can't support so many people."

　　 As the saying goes, I have food in my hands, and I don’t panic. If these infected people don’t start planting, then as the population increases, the supply from the Heaven Dou Empire will not be enough to feed them.

　　 Even if they don’t want to rebel, they will suffer from food shortages. They have to counter, otherwise they themselves will fight because of the lack of food.

　　 Now that there is food in hand, it is completely possible to accept more infected people. As long as they think about it, they can make this a dungeon that will never fall.

　　 Even if there is not enough food one day in the future. They also have several large organic matter manufacturing machines sponsored by someone. As long as weeds and food stalks are thrown into it, organic matter that can barely be eaten can be transformed.

　　 Although it will be ugly. But in a short time, maintaining internal order is still very simple.

　　 The two went on and called the bus heading for the next floor. Although there were elevators, they wanted to see the surroundings of the field.

　　 The architectural form of the underground city is quite strange. There is a field in the middle, and the city is surrounded by it. The city is like a circle, enclosing the fields in the middle. Such a layout is quite unreasonable in urban planning. It will make the traffic inside the city become abnormally congested.

　　 But the infected people still carry out this kind of planning, and they can't see the intention. The city surrounded by the center is not only the fields, but also the battlefields that may appear in the future.

　　 If the dungeon is invaded, then the enemy must be from the center. When the entrance came in, when the enemy's fingers swayed in, he was already in a state of being surrounded. The battle in the central part will not damage the facilities inside the city. As an underground fortress, this design is relatively reasonable, somewhat similar to the ancient city wall of Urn City.

　　 Continue down, the building below is exactly the same, but there are more canteens and dormitories here. The dormitories are fairly ordinary, just four-person or eight-person rooms, which are more crowded.

　　 The cafeteria is a bit weird. A group of people sit in the cafeteria and eat constantly. Most of their food is synthetic food that is difficult to swallow. It seems that eating is their job.

"What are these people doing? It feels that the things on the table are so unpalatable, and their faces are so bitter. They have been eating for a whole day, right?" Bingdi looked at these while eating, his face was still showing. People with ugly looks feel a lingering fear.

　　 "Hmm... I probably see what they are doing." Chengying saw the whereabouts of the food in their bodies, and all the food they ate was sent to the surface.

　　"These people should be a group of guys who have practiced the exercises that can help others eat. They are now helping those who are performing local acts to eat.

　　 Those on the surface need to act as if they can’t eat enough. So they can’t eat, but they can’t really starve to death. So let's do it like this! "

　　 Bingdi shuddered: "I thought it would be a very happy thing to take food. The delicious food is eaten from my mouth, and the fat grows on others. And I still can't eat enough.

　　 I never thought that eating for others would be such a painful thing. "

"Since it's work, they definitely won't eat food for others! If it's delicious, how can anyone expect others to eat it for him? Things that need to be proposed by others are generally unpalatable." Chengying When I got this exercise, I already guessed that it was possible.

　　 "Is there such a possibility? It is to ask someone else to eat it by herself." Bingdi had an idea, and she was thinking about food-related things very quickly:

　　 "It's the kind that I eat delicious, and then everything I eat appears in other people's stomachs, so that I won't gain weight, and I will never be full. It's perfect!"

"Uh... it's not impossible. You can try to promote in Tulip when you go back. It should create a lot of jobs." When it comes to jobs, Chengying wants to kill the guys in the practice research department. After they created the method of **** for others, there are indeed many more jobs. There have been many professional **** people in the society~lightnovelpub.net~ The sudden change of style makes people can't bear to look directly at it.

　　 "Hmm... wait, this person... is not right." Cheng Ying seemed to notice something?

　　 "What's wrong, is there anything wrong with that person?" Bingdi looked carefully, and found no problems there.

"This human body contains trace amounts of radioactive elements. This thing can only be produced through artificial synthesis. It is absolutely impossible that he ate something strange and entered the body. These radioactive materials should have been before he came to Sky Crystal City. , It was implanted in his body, because there are no conditions for synthesizing this element."

　　 Bingdi thought for a while and said: "Since you can't figure out what's going on, then think about what this element does."

　　 "Effect... This element has a lot of functions, but the usage that people on Douluo Continent can do seems to be really not much.

　　 Well, in general, this element can be used to treat illness, but it has nothing to do with spar disease. This person's body doesn't look like it has had that kind of disease.

　　 In addition, the chasing element also has some military functions. For example, it can be used as a beacon for an aerial reconnaissance aircraft, and it can be scanned by special equipment. This element will be very conspicuous. Even if it is hundreds of miles away, it can be easily found. "

　　 After listening to Chengying's words, Bingdi suddenly seemed to have thought of something, and asked Chengying: "Do you remember that you told me about the marking recapture method before?"

　　 "Marking recapture method?"

　　 [To be continued]

　　 ask for collection, ask for recommendation ticket~