There is really no need to make the corridor into a floor door. After all, the first two doors have been broken through. There is no point in making the corridor into a hidden door. Isn't it possible that others can't find a door when they come in
Moreover, after making the door into a floor door and changing the structure of the corridor, it seems that it will become inconvenient to transport materials.
Since there are no plans to touch other places, the drawings of this gate can be considered completed.
Looking at the CAD design drawings prepared on the computer, Chen Xin couldn't help but sigh. This was a skill he learned by himself when he was looking for his first job when he just graduated from college. After so many years, he had not drawn any drawings for a long time.
Chen Xin originally thought that after the end of the world, he would no longer be able to draw drawings, but he did not expect to use this skill again so soon.
But reality is always more twists and turns, weirder and more complicated than we imagine. Maybe fate will give you an unexpected surprise at some point.
Chen Xin couldn't tell whether this was a surprise or a shock. He closed the laptop again and placed it on the bedside. He checked the pistol in the bedside table and put it where he could easily get it. Chen Xin then turned off the light. He turned off the light in the bedroom, covered himself with the quilt and closed his eyes.
Tomorrow he would have to upgrade the gate and make an oxygen concentrator for Mo Qingyan. There were still many things to do.
But this fulfilling feeling is not bad for Chen Xin.
When Chen Xin fell asleep, there was still a dim green light in the bedroom, which was the algae oxygen generator in the corner working.
—————————
Chen Xin, who woke up early, was already sitting at the workbench. He planned to finish the oxygen concentrator for Mo Qingyan first.
The materials Ding Ning sent were sufficient to make an oxygen concentrator. The only trouble was that although the glass she brought was as whole as possible, there were still a lot of broken glass that needed to be cut and spliced.
In fact, if there is a furnace to melt the glass and then reshape it into the required shape, it would be the best use of the broken glass, instead of using glass glue to stick them together.
But for Chen Xin, he only needs glass as raw material. With the help of the system, he can easily process the glass into whatever he wants.
At this time, next to the workbench, the original broken glass had been reshaped into a tall circular straight tube, and Chen Xin was making the base.
The base of this microalgae oxygen generator is the key. The glass straight tube is relatively just a container. It doesn't matter what shape it is made into. It's just that the circular straight tube has the highest utilization efficiency of light.
Pipes and vacuum pumps need to be installed on the base to fill carbon dioxide into the annular straight tube to stimulate photosynthesis of microalgae.
Therefore, the chassis should lay annular pipes, and use an air pump to pump carbon dioxide into the pipes, allowing the carbon dioxide to enter the annular straight tube from the small openings in the pipes.
However, the production of high-purity carbon dioxide is troublesome and dangerous, so 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 circular straight tube is placed vertically, dead algae will settle to the bottom, and the light transmittance will be relatively poor.
With the various tools on the workbench and the upgraded oxygen concentrator in the bedroom as reference, Mo Qingyan's oxygen concentrator was quickly made.
After all, the structure itself is very simple, and the technology is relatively uncomplicated. With systematic assistance, Chen Xin quickly made everything and assembled it together.
Compared with the oxygen concentrator with upgraded system in the bedroom, the one made by Chen Xin himself looks rougher. Other than that, there is not much difference. It is already used by Mo Qingyan. enough.
So after completing the oxygen concentrator, Chen Xin did not spend his survival points to upgrade the oxygen concentrator, and planned to hand it over to Mo Qingyan.
Putting the completed oxygen concentrator aside, Chen Xin looked at the time and planned to have lunch first, take a rest, and then upgrade the door in the afternoon.
Although he just wanted to confirm the upgrade, Chen Xin didn't intend to complete it eagerly.
There wasn't much to do in the shelter itself every day. Chen Xin didn't want to finish everything at once and then become idle and play games.
Of course, Chen Xin is not really free from problems. The daily maintenance of the greenhouse cannot be saved.
But as the crops enter the growth period, he only needs to ensure water supply and light to maintain the operation of the greenhouse.
As for the prevention and control of various common diseases and insect pests in general greenhouses or planting greenhouses, Chen Xin is naturally also very concerned about it.
However, I don’t know whether the seeds he bought are good or whether the upgraded greenhouse system has advanced technology. At least so far, Chen Xin has not encountered any crop diseases or insect pests, and all the crops are growing healthily.
The upland rice he planted has now entered the long ear stage, starting from the young ear and developing into heading. This process will last about thirty days. According to the growth cycle, in a few days these upland rice will enter the fruiting stage and start heading.
It has to be said that Chen Xin had never farmed before. Only after he really started growing upland rice did he realize that the so-called upland rice cultivation was two crops a year because the environment and climate did not allow it.
If it is grown in a greenhouse, let alone two seasons a year, it can be grown three seasons a year in all seasons.
In this way, Chen Xin found that after he expanded the greenhouse to the current 200 square meters, if he used half of the land to grow upland rice, he could harvest about 600 kilograms of rice a year. Although it is not a lot, it can be eaten as a staple food at least It is enough to maintain Chen Xin alone.
Even if Chen Xin upgrades his greenhouse and upgrades the current single-layer hydroponic cultivation to a multi-layer hydroponic cultivation, all of which are used to grow vegetables, and the land is used to grow upland rice, his output can even afford another one or two. personal.
As for further upgrading, developing an aquaponics circulation system and animal breeding, and simply raising some fish or poultry such as chickens and rabbits, then more people can survive.
And more importantly, Chen Xin can now trade vegetables for food from the SWAT team.
Although the food from the shelter that Qin Lan brought before tasted really unflattering in terms of taste and texture, at least it was food, something edible, and it was considered relatively good food nowadays.
When it came to food, Chen Xin thought about it and decided to eat the roasted rat meat with mushrooms that Qin Lan brought for lunch today. As for the canned meat that he had exchanged from Mo Qingyan, he could keep it and eat it later.
After all, rat meat is now available, but pork is not sure when it will be available again. (End of chapter)