Replenishing fresh water and expanding the volume of the water tank is a relief for Chen Xin and solves his urgent need.

With a pump that can pump groundwater, Chen Xin obviously doesn't have to use water as hard as before.

Although there were three tons of fresh water and a water recycling system that purified sewage and recovered water vapor from the air, the shelter was not a space station in space, it could not be completely sealed, and the efficiency of the water cycle was naturally not 100%, in fact, 90% of the water cycle efficiency was already a very remarkable efficiency.

According to the water statistics of urban residents in Yanguo, under normal circumstances, a person will use 130-300 liters of water a day, and the average is about 4 to 10 tons of water a month.

And this is not counting the consumption of watering in the planting greenhouse.

Counting the evaporation of water vapor in the ventilation duct and the watering consumption of the planting greenhouse, Chen Xin was able to last a month before the problem of water shortage, which is really how he has saved water.

But now with a water pump and a large water tank that can hold eight tons of water, Chen Xin can let go of the water a little, no longer like before, like an astronaut on the space station, every day to wash his face is to wipe it with a wet towel, and he can only rub the soap after taking a bath, and he has to turn off the faucet when he rinses it.

Being able to relax some water restrictions is really a great improvement in Chen Xin's living conditions.

He believes that when he settles the survival point tonight, he will be able to increase his daily income by at least 1 point.

After filling the water tank, Chen Xin turned off the water pump, and then returned to the planting greenhouse to continue watering and re-watering the land that had not been watered before.

If an acre of land is used to grow vegetables, it is really just a small vegetable garden, not much space, but in fact, 100 square meters is not small at all.

If you put it in a place like Beijing, Shanghai and Guangzhou, a 100-square-meter house can't be built without one or two million foundations, do you still think this 100 square meters is small?

Moreover, 100 square meters of land may only be enough for Chen Xin to eat, but if you grow cabbage and lettuce, which can be harvested in a month, its yield is considerable.

At least when Chen Xin harvested the lettuce and cabbage that were already ripe in the field, he found that there was already a big pile on the ground, which made Chen Xin feel that he couldn't finish it.

How many of these vegetables there are, Chen Xin has no scales, so obviously he can't count them.

But at least one or two hundred vegetables are available, and the few plants that are left to grow, and the carrots that are planted in the other half of the land.

According to the calculation of eating one vegetable a day, these dishes are enough for Chen Xin to eat for more than half a year.

Even if the cabbage is shelf-stable, Chen Xin eats cabbage every day, he doesn't think he can eat these cabbages in half a year, not to mention that there is the same amount of lettuce next to him.

So leave a part that is enough for himself to eat, and Chen Xin plans to take out the rest to exchange for supplies.

And this is also Chen Xin's original plan, no matter what the situation in the outside world is, Chen Xin needs to go out and see what the world has become under the impact of meteorites.

After packing the harvested vegetables in large plastic boxes, Chen Xin thought about what to do with them.

These boxes were the storage boxes that I bought before, and they were originally used to put things in the shelter, but after actually entering the shelter, Chen Xin found that there was nothing to pack in boxes, and these storage boxes have been kept in the storage room, and now they come in handy.

In the process of packing these lettuce and cabbage, Chen Xin also roughly estimated how many of these vegetables there were.

There are about 80 cabbages, which are packed in two plastic boxes, which look at least three or four hundred catties, and although the lettuce yield on the side is not as exaggerated as the cabbage, it is also filled with a semi-plastic box, which is about more than two hundred catties.

Chen Xin's cabbage is an early-maturing variety, because the plant is planted in a greenhouse, although it has only been planted for a month, it has also grown very full, according to Chen Xin's estimation, one is enough for him to eat for three or five days.

Fortunately, cabbage itself is a shelf-stable vegetable, and as long as it is stored properly in a low temperature environment, it can be stored for three or four months without spoilage.

So Chen Xin left a box of cabbage and half a box of lettuce and put them in his pantry, while the remaining two boxes of vegetables were moved to the garage and ready to be taken out to exchange supplies.

It's just that when moving the cabbage and lettuce to the storage room, Chen Xin scratched his head when he looked at his storage room, and felt that he should include the upgrade of the storage room in the list of upgrade plans.

When he was repairing the storeroom, because all the stored food was bottled water and bagged self-heating food, there was no need for low-temperature storage and freshness, so Chen Xin did not have these functions, let alone prepare a refrigerator in the shelter.

But now that these fresh vegetables have been harvested, Chen Xin has to think about the storage of vegetables.

Cabbage is not a big problem, the temperature in the storage room is not high, and it should be stored for a lot of time, but lettuce may not be left for a few days and will wilt.

Therefore, finding a freezer or refrigerator that can store at least one or two hundred catties of vegetables has become something that Chen Xin needs to worry about now.

Some people may ask, doesn't it mean that the outside temperature will drop to dozens of degrees below zero? Are you worried about the spoilage of vegetables at such a low temperature? Shouldn't you be worried about freezing hard and not being able to bite or move?

That's true, but the problem is that the temperature hasn't dropped that low!

Moreover, Chen Xin's storage room is in the shelter, and like the shelter, it is located under the layer of soil hundreds of meters above the head, so it is impossible to be dozens of degrees below zero like the outside world! If that were the case, Chen Xin would have been frozen and stiffened.

The soil layer has a thermal insulation effect, and although the surface heat of the underground is not obvious, in fact, the heat is still constantly being transferred from the mantle to the surface.

In fact, scientists have calculated that for every kilometer of depth, the temperature rises by 25 degrees, and on average, every 100 meters of depth of the stratum will increase the temperature by three degrees.

So now it is not very cold in Chen Xin's shelter, and the temperature in the container house is still more than 20 degrees, and it may not be able to wear a single coat, but it is almost the same to put on a coat.

Of course, this kind of temperature can't be considered hot, and these vegetables may not spoil quickly when stored in the storeroom, but even if the temperature in the storeroom is not high, it is still more than ten degrees, if Chen Xin wants to keep these harvested fresh vegetables and eat them slowly, it is necessary to prepare a refrigerator or refrigerator.

Fortunately, it is now the end of the world, and it should be no problem to bring these fresh vegetables out, and it should be no problem to change them to a refrigerator or refrigerator, and maybe they can also be exchanged for a lot of other supplies.

Thinking of this, Chen Xin began to prepare for going out.