It is really unnecessary to make the corridor into a floor door. After all, both doors in the front have been broken through, and it is not very meaningful to make the corridor into a hidden door. Can someone else find a door when he comes in?

Moreover, after making the door into a floor door and changing the corridor structure, it seems inconvenient to carry materials.

Since I don’t plan to move other places, the drawings for this gate are ready.

Looking at the CAD design drawings made on the computer, Chen Xin couldn't help but sigh that this was the skill he learned when he first graduated from college. He hadn't drawn drawings for a long time after so many years.

Originally, Chen Xin thought that after the end of the world, he would not draw drawings anymore, but he did not expect that he would use this skill again so soon.

But reality is always more bizarre and complex than we imagined. Maybe fate will give you an unexpected surprise at any time.

Chen Xin couldn't tell whether this was a surprise or a fright. He turned off the laptop again, placed it on the head of the bed, checked the pistol in the bedside table where he could get it. Chen Xin then turned off the bedroom lights, covered the quilt and closed his eyes.

Tomorrow he will upgrade the door and make an oxygen generator for Mo Qingyan, and there are still many things to do.

However, this fulfilling feeling is not bad for Chen Xin.

When Chen Xin fell asleep, there was still a little dim green light in the bedroom, which was the algae oxygen generator in the corner working.

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Chen Xin, who woke up early, was already sitting in front of the workbench. He planned to prepare the oxygen generator for Mo Qingyan first.

The materials Ding Ning sent were sufficient, and it was enough to make an oxygen generator. The only troublesome thing was that although the glass she brought was as secure as possible, there were still a lot of broken glass that needed to be cut and spliced.

In fact, if a furnace can melt these glasses and then remade them into the required shape, it is the best use of these broken glasses, rather than using glass glue to glue them together.

However, for Chen Xin, he only needs glass as the raw material. With the help of the system, he can easily process these glasses into whatever he wants.

At this time, next to the workbench, the original broken glass had been reshaped into a tall circular straight cylinder, and Chen Xin was making the base.

The base of this microalgae oxygen generator is the key. The glass straight barrel is relatively just a container. It doesn’t matter what shape it is made, but the ring straight barrel is relatively the most efficient in utilizing light.

Pipes and vacuum pumps are needed to be installed on the base to fill carbon dioxide into the circular straight barrel to stimulate microalgae for photosynthesis.

Therefore, the chassis should be laid with an annular pipe, and an air pump should be used to pump carbon dioxide into the pipeline, so that the carbon dioxide can enter into the annular straight barrel through the tiny openings in the pipeline.

However, it is troublesome to produce high-purity carbon dioxide and has certain dangers. Therefore, Chen Xin directly uses ordinary air here, allowing the chassis to directly absorb the surrounding air.

As for the fill light, it is installed on the top cover, because the ring-shaped straight barrel is placed upright, and the dead algae will deposit to the bottom, which will be relatively less transmissive.

With various tools on the workbench and the upgraded oxygen generator in the bedroom as reference, the oxygen generator made by Mo Qingyan quickly.

After all, the structure itself is very simple and the technology is relatively not complicated. With the help of the system, Chen Xin quickly made everything and assembled it together.

Compared to the oxygen generator with the upgraded system in the bedroom, the one that Chen Xin made by himself looks rougher, except that there is no big difference, and it is enough to use it for Mo Qingyan.

So after the oxygen generator was completed, Chen Xin did not spend a survival point to upgrade the oxygen generator, and planned to hand it over to Mo Qingyan.

Putting the prepared oxygen generator aside, Chen Xin looked at the time and planned to have lunch first, take a break, and then come to upgrade the door in the afternoon.

Although he was just to confirm the upgrade, Chen Xin did not intend to finish it in a hurry.

There is not much to do in the shelter every day now, and Chen Xin doesn't want to finish everything at once, and then he becomes idle to play games.

Of course, Chen Xin is not really doing nothing, and the daily maintenance of the planting greenhouse is still unsavory.

However, as the crop enters the growth stage, it only needs to ensure water supply and light, and maintain the operation of the planting greenhouse.

As for the prevention and control of various pests and diseases common in greenhouses or planting greenhouses, Chen Xin is naturally very concerned.

However, I don’t know if the seeds I bought were good or the planting greenhouses that were upgraded systematically have black technology. At least so far, Chen Xin has not encountered any crop diseases and pests, and all crops grow very healthy.

The dry rice he planted has now entered the long-end stage, starting from young ears to heading. This process will last for about 30 days. Calculated according to the growth cycle, these dry rice will enter the fruiting stage in a few days and start heading.

I have to say that Chen Xin has never planted fields before. After he really started planting dry rice, he realized that the so-called dry rice planting two seasons a year is just because the environment and climate do not allow it.

If it is in a greenhouse, not to mention two seasons a year, it can even grow three seasons a year and four seasons a year.

In this way, Chen Xin found that after he expanded the planting greenhouse to the current 200 square meters, if he used half of the land to plant dry rice, he could harvest about 600 kilograms of rice in a year. Although it was not a lot, it was enough to eat it as a staple food to maintain Chen Xin's consumption alone.

Even if Chen Xin upgraded the planting greenhouse and upgraded the current single-layer hydroponic planting to multi-layer hydroponic planting, all of which were used to grow vegetables, and the land was used to grow dry rice, his output could even be borne by one to two people.

As for further upgrading, creating a symbiotic circulation system for aquatic vegetables and animal breeding, and simply raising some poultry such as fish, chickens, rabbits, etc., which will be able to maintain more needs for human survival.

And more importantly, Chen Xin can now use vegetables to exchange food from the SWAT team.

Although the food in the shelter that Qin Lan brought before was really delicious, it was at least food, something that could be eaten, and it was a relatively good food nowadays.

When talking about the food, Chen Xin thought about it and decided to eat the mushroom roasted rat meat that Qin Lan brought today at noon. As for the canned meat that he exchanged from Mo Qingyan before, he could keep it and eat it slowly.

After all, there are some rat meat now, but there is no sure when it will be eaten again.
Chapter completed!