It's not known whether Li Wensheng has changed to diesel. However, after he has built another oxygen generator, the materials he has on hand are exhausted. The remaining six friends who need the oxygen generator can only take the goods after he has obtained new materials from Qin LAN.

Knowing this, the other six group friends can't help themselves. In this case, waiting one more day will increase their chances of being in danger.

But it is not easy to collect materials.

Among the materials Chen Xin needs to make an oxygen generator, glass is the easiest to obtain. After all, if you don't mind breaking glass, it's really everywhere now.

Pipeline, it's easy to say, to have no one to live in the community demolition, how much can still be put together.

It's just that the vacuum pump and the fill light are not easy to collect. There are two friends in the fill light group who have their own spare parts, but no one really has the vacuum pump.

So despite the urgency, in addition to the "doctor" who quickly got the oxygen generator, Li Wensheng and the other two group friends, the other six group friends still have to wait until next month.

By sending out four oxygen generators and Mo Qingyan's harvest, Chen Xin has earned a total of 600 survival points and an additional 16 daily survival points every day.

Now Chen Xin has been able to harvest 18 + 16 survival points every day, and his monthly income has exceeded 1000 points.

Compared with the time when Chen Xingang got the system, his monthly income was just over 300 points, which is really improving very fast.

This also let Chen Xin understand the system to obtain the daily survival method.

One of the natural ways is to improve the living conditions of his refuge.

One is to help others and let more people improve their living conditions.

They have their own advantages and disadvantages. It is not said that the latter is better than the former, but one may have a slower survival rate, and the other is faster, but there is a certain risk.

After all, under the doomsday disaster, the darkness of the human heart breeds. Whether helping others is helping others or harming yourself needs to be well controlled.

Therefore, it is more appropriate to help others appropriately, let oneself get more survival, and create a safer and more comfortable refuge for oneself on the premise of ensuring one's own safety.

Chen Xin, who is finally well-off in hand, doesn't restrain his desire to upgrade and upgrades the kitchen.

The kitchen is the place that Chen Xin considered upgrading at the beginning of acquiring the system. Originally, it was just the place where the induction cooker and kitchenware were placed. After Chen Xin upgraded, it was transformed into a formal stove, and there was a row of cupboards on the wall. It finally looked like that.

However, the kitchen upgrade did not bring new daily survival for Chen Xin.

This is not too hard to understand. After all, even if the kitchen is upgraded, Chen Xin still eats those things every day.

Only if he can obtain more food materials and cook delicate and delicious dishes in the kitchen can he improve his living conditions.

As for the medical room, because of the lack of some materials, Chen Xin can only wait for Qin LAN to send the materials and materials he wants this month before he can upgrade.

Otherwise, he will have to spend 10 times of survival to upgrade.

Although it is not impossible to say that, Chen Xin still insists on saving if he can.

Besides upgrading the medical room, he also has to upgrade the power system, which is a big one.

After all, the power system in Chen Xin's plan also needs to be connected to biogas fuel cells, and if you want to have biogas, you must first build a biogas digester.

Biogas digesters can't be dug in situ. They can only be obtained by upgrading the algal oxygen generator. In addition, fuel cells must be kept as a survival.

Qin Lan's delivery time is quite punctual. Although we don't care much about the time and date at the end of the day, Qin LAN still delivers Chen Xin's materials on time at the beginning of each month.

"Ah Xin, your gate is well repaired!" Qin LAN looked at the gate and entrance of the refuge which had become completely different from her last visit, and couldn't help praising it.

Hearing Qin LAN talk about this, Chen Xin can't help but feel a sudden surprise. This is the first time that he has really exposed his upgraded system in front of others, which inevitably makes him nervous.

So he asked Qin LAN casually: "do you think it's good, Alain?"

"Of course, it's very good. Ah Xin, you can build it by yourself. It's very powerful. Ordinary construction teams may not be able to do it like this." Qin LAN doesn't seem to be aware of any violation. Instead, she praises Chen Xin's craftsmanship: "I know you are skillful when I am with you. I didn't expect that ah Xin has such ability."

"I didn't get a chance to show it before, did I?" Chen Xin can only smile right now.

Through Qin Lan's reaction, Chen Xin seems to understand what the system means by the fuzzy concept of information state.

For example, the gate of this refuge, Qin LAN can see at a glance that this is not something Chen Xin can complete, but the concept of information state of the system is vague, which makes Qin LAN think that this is Chen Xin's own construction and transformation.The concept of this information state is vague. It is difficult for Chen Xin to understand what level of technology it is, but it does not prevent him from understanding its effect.

In short, it is to make everything reasonable and not to make people aware of the abnormality.

Others will think that the upgrading of the refuge is Chen Xin's own transformation. When new items appear, they will also think that Chen Xin made or bought them. In short, it is to make everything reasonable.

Chen Xin doesn't know if this is a halo of mental retardation. After all, this level is just rationalizing the appearance of various items, not mental retardation.

Chen Xin didn't think much about this problem and soon left it behind.

Qin LAN will bring materials into the shelter, Chen Xin still asked her to sit down and drink water.

Qin LAN didn't refuse. She sat down on the sofa in the living room and looked around. Then she suddenly asked Chen Xin, who was pouring water for her, "ah Xin, don't you have any heating equipment?"

"Heating equipment? Yes, it should be enough to prepare an electric heater, sleep at night and an electric blanket. " When Chen Xin heard Qin LAN ask him about the heating equipment, he felt a little surprised, but he still replied, "I'm in the mountain. When I built the shelter, the wall was also insulated. The temperature is not too low. An electric heater is usually enough."

"Your shelter is so big, there is only one electric heater, which can only warm one place. Is it cold in the room as a whole? And you still grow vegetables in the greenhouse. The temperature in the greenhouse can't be too low! " Hearing Chen Xin say so, Qin LAN is still a little worried.

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