A month is not a long time.

In this month, there have been three snowfalls in the base of the old Emei site.

Luo Qi deliberately asked someone to measure it, and found that the temperature outside was close to minus 20 degrees, which was undoubtedly extremely abnormal before the disaster.

From ancient times to the present, the climate of Bashu has been relatively suitable, even in the cold winter season, it has not been so cold.

Moreover, it is early winter, and it is not yet the coldest time.

But no matter how cold the weather is, the people living in the base still have to risk frostbite and do a lot of hard work.

Walls are being built intensively, broken ground is in urgent need of repair, mines and bullets are being manufactured overtime, and every day, everyone, even children and the elderly, has a new task.

In this month, Li Yuangang has undoubtedly become a busy man, and the construction workers led by him have traveled to almost every corner of the entire base within a month, even if Li Fatzi has more than 10,000 manpower under him at this time, but many things still have to be done by Li Fatzi himself.

For example, repairing the ground, those deep pits poked out by Zhou Fang with the power of the halberd are deep and small, ordinary people can only shovel soil to fill it, but this will destroy the green soil full of nutrients in other places, the best way is to let Li Fatzi do it, drive those extremely deep potholes to close automatically.

In addition, it is the construction of ditches.

The ditch had to be repaired, as it was only after the ditch could the melted snow be diverted into the only river in the base, thus ensuring the flow of the river and preventing it from being completely frozen in ice.

If the river is frozen in ice, then the problem is really serious.

Li Fatzi has studied Qian Yukun's diary, and roughly knows the formation process of the entire base, but reading notes and looking at real objects are completely different things, probably because Qian Yukun wrote his diary just out of habit, and he didn't write too seriously, so many things are brushed aside, only some extremely important things will be described in detail, and those things naturally talk about the river in the base, and clearly point out that the river is actually an important part of a circulation system. But when Li Fatzi really relied on his ability to touch the river, he was still shocked by the circulatory system that Qian Yukun pointed out.

This circulatory system is an extremely huge project.

First of all, in order to ensure the cleanliness of the river water, the river water should not come into contact with the polluted black soil, so Qian Yukun purified enough mud and soil, and then isolated all the clean mud and other filthy soil with solid rock walls, and through continuous reinforcement and thickening, these rock walls became stronger and stronger.

Then, a huge network of groundwater was built.

From the main underground channel used for circulation, there are countless undercurrents, some of which gush out of the surface for irrigation of paddy fields, and some of which are dispersed into countless trickles that are carefully distributed to nourish crops such as potatoes, corn, and vegetables.

In addition, some undercurrents will flow into dozens of large pools buried in the depths of the earth, almost completely enclosed, and the walls of the base are specially set up at the highest point similar to water towers, which can pump up the water in these large pools, and then after repeated precipitation, filtration, disinfection, and repeated testing to finally confirm that there is no problem, it will be put into the water pipe, and then come to thousands of households.

If the river is really blocked by ice and snow, it will affect the circulation system of the entire underground water network, and will also affect the drinking water and life of more than 200,000 people in the entire base.

In addition, digging ditches is also to move clean soil, this work is done by others, it will inevitably cause some damage, Li Fatzi can only go into battle in person, has to brave the cold, with a group of workers to dig layers of ice and snow, and then dig out many ditches from the ground that is frozen hard by snow, and constantly let people use wooden sticks to smash the ice that sticks to the riverbank, so that the snow water can flow into the river along the ditch.

And every time a ditch is dug, Li Fatzi will have people light piles of bonfires next to the ditch, and use the high temperature of the bonfire to melt the snow.

Thanks to the efforts of Li Fatzi and a group of construction workers, the water in the base has been abundant for the past month, and there have been no problems.

In addition to repairing the ground and digging ditches, there was one more thing that Li Fatzi had to do, and that was to make the raw materials for building the wall under Li Buyun's guidance.

According to Li Buyun, this kind of wall even has insect resistance, fire prevention, waterproofing, and corrosion resistance, and to create such a wall, special materials must be used.

And this kind of special material, at this time, only Li Fatzi can get it in the entire base.

Originally, after learning of Qian Yukun's death, Li Buyun planned to apply for a general wall first, but when Li Yuangang appeared in front of Li Buyun, Li Buyun changed his mind and began to devote himself wholeheartedly to the production and hoarding of raw materials.

Then, Li Fatzi had a tragedy, every day in front of the wall under construction in the north, according to Li Buyun's requirements, try his best to drive the heat flow in his body, echo the earth's breath, and use the soil outside the base as raw materials to create extremely thick cement, hard as metal sand grains, and evenly mix these cement and sand grains.

Every day, Li Fatzi had to make several tons of cement and sand, and he was so tired that he had to look for potholes everywhere, and repair the walls of the fence, dredge the frozen ditches, stabilize the underground rock walls, and when he got home, he fell asleep and woke up to dinner.

During this period, Li Fatzi wanted to give up several times because he was too hard, but every time he remembered the broken and desolate world outside, he gritted his teeth and survived.

Yu Tong has been following Li Fatzi's side, and has also helped Li Fatzi a lot, and every day after returning home, he is tired and exhausted, but he still eats very regularly.

As for Xu Ruoyu, uh, she is the most idle one in Li Fatzi's team every day, and she is mainly responsible for receiving Li Fatzi and Yu Tong's share when someone brings lunch, and then getting their fingers in turn.

Compared with Li Fatzi, who is busy every day, Luo Qi is very comfortable.

Luo Qi moved to a new office, completely closed the office except for the entrance and exit doors, and then installed air conditioning, and worked inside every morning.

Under Luo Qi's teaching, Du Li quickly understood the essence of her work, and every day when she sorted out the documents for Luo Qi, she would accurately pick out the useful parts, and then hand them to Luo Qi, and give the rest to Zeng Tao.