While eating dinner, Chen Xin was also planning tomorrow's work.

There are actually a lot of things to do every day in the shelter, so Chen Xin has now developed the habit of making a plan for himself so that things can be more organized.

The planting greenhouse has begun breeding, these days only need to check the germination of the seeds, tomorrow there is no need to arrange the work of the planting greenhouse, just go to see it in the morning, noon and evening.

Qin Lan sent new materials, promising that the oxygen concentrators of the other six group members in the survival group needed to be made as soon as possible, and Chen Xin planned to make two of them first tomorrow morning.

Two oxygen concentrators are 200 survival points, and six are 600 points.

However, Qin Lan sent a lot of materials, Chen Xin also reserved a share of his own use of a few more oxygen generators, he plans to make four more oxygen generators for himself this month, and then use five oxygen generators together as an oxygen generator to upgrade, and improve the oxygen production efficiency of the oxygen generator and the production of biomass as a whole.

With enough biomass, the biogas fuel cell that Chen Xin expects can also be put on the agenda.

The biogas fuel cell is online, which can effectively reduce the load on the generator, and when Chen Xin upgrades a new power generation method, the gasoline generator can be honorably retired, and the gasoline can also be used exclusively for the car to go out.

In fact, the biogas fuel cell is only an electric auxiliary in Chen Xin's plan, and the main significance of its existence is to consume the biomass produced by the algae oxygen generator, and release the heat during the reaction process to supply the planting greenhouse.

Although Chen Xin is not worried about the problem of low-temperature heating mentioned by Qin Lan, he still needs to be considered.

After all, the current level of the shelter is not high, although the system upgrade can solve many problems, but there are still many problems that need to be discovered and thought of by Chen Xin before he can solve the problem through system upgrade.

Thinking about this, Chen Xin was also thinking about how to carry out the first overall upgrade of the shelter.

At present, as far as survival points are concerned, as long as six oxygen concentrators are delivered to six group friends, he will be able to have another 600 points in his account, counting the previous savings, according to the current rate of obtaining survival points every month, Chen Xin estimates that he will be able to save enough survival points for material upgrades in another month.

As for the materials, it is easy to say, mainly the reinforced concrete, which can be provided by the SWAT team at present.

Although just like in the game, there is a limit to the amount of items that can be sold in the store each month, and there is a limit to the amount of supplies that Chen Xin can get from the SWAT team every month, but the total amount of materials that Chen Xin needs is actually not large.

Counting the materials that he had already received from Qin Lan this month, plus the materials that could be exchanged for next month, Chen Xin calculated that he could almost meet the needs of upgrading.

Being able to upgrade the shelter as a whole is what Chen Xin has been looking forward to since he got the system.

After eating and packing up everything, Chen Xin turned on the TV and game console, planning to play two games to relax himself, and specially took out the wine from the bedroom.

However, although he was drinking wine and playing games, Chen Xin did not plan to play for a long time.

He didn't play games very often, and while it was the only entertainment in the shelter at the moment, and a channel he used to reminisce about the years before the disaster, he didn't indulge in it, and tried to restrain his desire to play games as much as possible.

On the one hand, game consoles and TVs are considered large consumers of electricity, and it didn't matter when there was power supply in the past, it was nothing more than a matter of a few words left by the meter at the end of the month.

But now this is a matter of life and death, Chen Xin can't waste too much electricity in order to play games, and it is better to supply the planting greenhouse with this electric energy.

On the other hand, Chen Xin doesn't want to be too addicted to the game and reminisce about the past all day long.

This not only dampens his own morale, but also has a negative effect on his mentality, and does not help to survive in this apocalypse.

Proper play of games can regulate the mood, relax the various pressures brought about by the end of the world, and relieve the tension of nerves, which is the same as the effect of playing games properly before the disaster.

But being too addicted to games can have the same negative effects as being addicted to games before the disaster.

While rubbing the handle, Chen Xin suddenly thought that he had a game to play, so what should the people in the shelter rely on for entertainment?

Entertainment is a must at all times, if only work is not relaxed, the negative emotions in the heart of the person will grow rapidly, not only affecting a person's mentality, but also causing a person's personality to become more and more depressed, and even thoughts will become extreme.

It's fine if only one person becomes like this, but if many people are like this, all kinds of social problems will follow.

It's like a string that breaks if you keep it too close.

Even the Diao people in the ice steam era can enjoy minus 70 degrees Celsius, drinking, boxing and relaxing.

However, Chen Xin gave up thinking about this question after thinking about it for a while, not because he couldn't think of it, but because this question was too simple.

The people of Yanguo have created too many ways of entertainment from ancient times to the present, and before there were no televisions in ancient times and these dazzling electronic products now, people's entertainment life is also rich and colorful.

Traditional opera may be a bit old-fashioned, but chess and card entertainment is never outdated, and a deck of playing cards is enough to keep a group of people entertained all day.

If you add the traditional quintessence of mahjong in Yanguo, it is even more needless to say, play eight rounds first.

Of course, these things are also the most likely breeding grounds for gambling, but Chen Xin doesn't think that the managers of the shelter will allow gambling to flourish.

And to be honest, in the shelter under the apocalypse, Chen Xin didn't think of anything that could be gambled.

Although the government of the Yan Kingdom has not collapsed, and all departments are functioning normally, it is clear that in the last days the currency has become useless.

So gambling money? It's better to bet on a few mushrooms.

Maybe you can still buy things with money in the shelter, but seeing that Qin Lan came to Chen Xin to exchange materials every time he bartered and never mentioned money, Chen Xin had a clear understanding of how much purchasing power money was before the disaster.

And under the end of the world, all the materials allocated to individuals are distributed according to the head, which will be enough to meet the needs of survival, if someone is really willing to take something out of his teeth to gamble, Chen Xin can only wish him good fortune as soon as possible and get out of this last world.