Cellar - Lu Ning has only one very rough impression of this kind of facility:

The inside of the cellar should be narrow at the top and wide at the bottom, and the whole should be in the shape of a triangular cone. The opening of the cellar and the section below about a meter is narrow, and the diameter is only slightly longer than the width of the shoulder.

The mouth of the cellar is cured with a circle of cement, and finally covered with a slate or iron plate.

Cement Lu Ning is gone, but he can use clay instead.

As for what it looks like inside the cellar...... Lu Ning can only rely on imagination.

Fortunately, the process of building walls for a mud house gave him some inspiration.

Although he didn't know what it was supposed to be, according to the same method, using wood as bones and supplemented by clay to dry, most of the time it would not be too much of a problem.

But in practice, Lu Ning found that he still underestimated the difficulty of this work.

The first is site selection -

The cellar is a cave dug downward, so first of all, the soil around it must be tight and not easy to collapse.

In addition, since it is underground, the soil itself needs to be dry enough and the ground is high. In this way, there is no moisture in the cellar and no water can easily enter the cellar, which will cause the stored vegetables to rot.

Flatbread lay on the wall of the mud hut, curiously watching Lu Ning dig the camp full of pits, and finally finally found a place suitable for digging and building a cellar.

Right next to the mud hut.

Then he soon encountered a second problem: how do you get out after digging deeper than a certain depth?

A cellar is not like a half-cave house. The depth of the semi-cave house is only about one meter, and the shape is loose, so you can dig a step for entry and exit.

But the cellar can't be done like this.

The depth of this thing must be at least about 5 meters, and the shape is fixed, so it is difficult to refill, but you can't make a step to get out first.

It stands to reason that there should be a ladder in the cellar?

Lu Ning thought about it, although there were no drawings, it shouldn't be difficult to get a ladder, and he might be able to make one.

But when he looked around, he found that he didn't have the right materials.

It takes almost 5 meters to dig the cellar to the end, and the ladder has to be more than 4 meters to be enough. And he didn't have that long wood in his hands......

Either you have to go to the Giant Wood Forest and get two out of now. But that would take too much time.

Lu Ning pondered for a long time, and he remembered that the cellar he had seen in his impression did not seem to rely on ladders to climb, but should rely on ......

Wooden frame!

Lu Ning suddenly realized.

Wooden shelves are built under the cellar to not only support the surrounding wall structure, but also to make efficient use of the space to store more vegetables.

And there is another advantage - the shelves are built layer by layer, which is a ladder structure in itself.

Of course, the shelves alone are not enough to ensure that the narrower part of the top goes straight up and down, but this part can be solved with a ladder.

The problem has been solved, let's go!

Lu Ning picked up the shovel and continued to dig with his head down.

This digging went straight to the sunset - although the sky was still cloudy and I couldn't see the sun as much as brushing pot water, but in terms of time, it should be this time.

When Lu Ning stepped on the makeshift shelf and came out of the cellar, his mind was already a little unconscious.

He felt that the soles of his feet were floating, and he was full of fairy energy.

Of course, it's not just fairy qi - on the short journey back to the campfire from the construction site, Lu Ning clearly felt a cold air enveloping him, penetrating through the clothes of animal skins.

The temperature has been dropping, and now even wearing such a thick layer of all-natural fur and burrowing into a tent can't stop the cold.

And he didn't sleep for two days and one night, Lu Ning felt that his body couldn't hold it anymore, and the moment he got into the tent, his physical habits for many days almost made him fall asleep.

With difficulty opening his eyelids, Lu Ning took out a few pieces of green potatoes from the tent.

…… The frostbite of these green potatoes deepened again, and a layer of hoarfrost hung on the skin.

It seems that the cellar must be built by daylight tomorrow at the latest, otherwise this large pile of vegetables and grain will be wasted.

Of course, although the matter is urgent, Lu Ning's results of almost all nights in the past two days are quite impressive.

The walls and skeleton of the mud hut have been completed, and only the work of placing the roof of the shed remains.

The cellars are already taking shape, and they can even be put into use if the requirements are less stringent – but safety may not be guaranteed because there are no wooden piles and terracotta walls.

The charcoal has been burned in two batches, and the third batch is in the stone kiln.

Lu Ning got out of the tent, put the green potatoes on the edge of the campfire and roasted them, and then, without knowing what to think in his head, he picked up a meat leg and brought it to his mouth to nibble.

"Woo woo !!"

The meat leg in his hand struggled violently, Lu Ning looked at it, and then realized that what he picked up casually was not a roasted meat leg, but a flatbread sleeping by the campfire.

Throwing the flatbread aside, Lu Ning patted his forehead with his hand and muttered there: "It seems that I am really sleepy, and my consciousness is a little unconscious." I received the supplies today and went to bed early......"

Lu Ning then skewered it with wood and put it on the fire to roast.

"Don't rush to eat, it's not cooked yet."

Lu Ning blasted the flatbread aside, and then took advantage of this time to call the ghost with a soul connection.

"Data restructuring is in progress.

"The captain has been issued: the process drawings of the earthen fire kang have been issued, please check the captain.

"The next aid is being manufactured in an accelerated manner, and the estimated completion time: 24 hours, please be patient."

A beam of light penetrated the sky and was extremely conspicuous in the boundless dark night and dark clouds, and the big cake on the side was frightened by this strange special effect, and looked at Lu Ning in a daze.

"Ondol...... Oh, yes, you can get one of these. ”

This thing is not strange at all. In his hometown in the northeast, before the building completely banned bungalows, this was a necessary facility for every household.

The earth is built up, leaving a tunnel to transfer heat, and the heat that can only be generated by the flame in a small area around it is extended to the entire area of the ondol.

As long as the fire continues, the low temperature will never be able to invade the house.

Moreover, the manufacturing process of the fire kang is not complicated, it does not require any rich experience, and the fault tolerance rate is outrageous.

Anyway, as long as people don't collapse when they lie down, they can basically be considered successful.

Satisfied, he ate the roasted green potato, cut off another piece and threw it to the flatbread for it to nibble on its own.

Lu Ning was so sleepy that he didn't realize that he was still holding the drawings in his hand, and went directly into the tent, and soon fell into a deep sleep.

The sky was getting darker. The cold wind, which had already weakened, became strong again, and soon the sky and the earth were covered with snowfall like a curtain, and the mountains were all boundless silver and white.

The campfire crackled and jumped, and the flames kept shaking.

The tent was blown by the wind, and a bitter cold wind swept into it along the cracks in the tent, and Lu Ning curled up in the quilt.

It was eight o'clock in the morning, and the ghost woke up Lu Ning on time to begin the final finishing touches.