At first, Song Xuan was worried that if he got it like this, the entire cellar would get wet, but after thinking about it, he still had to do a few waterproof and moisture-proof work in the later stage anyway, and it wouldn't take long for this bit of moisture to dry it.

"Oracle, is it necessary to dig so deep?"

"It is necessary, of course it is necessary!"

It took two days of digging to dig this two-meter-square hole to a depth of more than one meter, and Shi Meng now has a headache when he sees the soil.

The deeper you dig underneath, the less buildings on the ground need to be exposed.

It took three full days for everyone to dig the entire crypt to the depth that Song Xuan wanted, almost as deep as one person.

Digging out the cave is only the easiest, but it is also the first step, and there is a lot of work to be done, first of all, the whole cave has to be dried because of the water splashed during the excavation.

It's as simple as building a few pots of charcoal fire in the middle of the crypt.

Then comes the all-important moisture protection.

Although the excavated soil is very dry, it is difficult to say during the rainy season or winter.

Especially after being filled with rice, there are no layers of soil barriers, only the things designed by Song Xuan can block water vapor.

First of all, he had to smooth the soil around the cave, and in addition, Song Xuan also had the stones bring in a lot of clay, which was pasted around and smeared very evenly, and then it was roasted for two days in a row.

The crypt can also play a role, in addition to the fact that the top cannot be sealed tightly, the effect is worse than the brick kiln that Teng Snake worked hard to build, and at the beginning, Teng Snake's kiln was also dug from a hole in the hillside.

Song Xuan around him let the stone brush several layers of grass and wood ash water, although the effect is not as good as the pottery in the brick kiln after burning, but most of them still have such a layer, but there are still many cracks, even so, this can also play a good role in blocking moisture, as for the part that is not done, it can only rely on the next link.

Before that, Song Xuan first used some bricks on it, and surrounded a brick wall more than half a meter high according to the size of the area.

These things have already begun to be prepared by the stone and stone class, and when the time comes, they can be directly erected as soon as they are finished here.

Since it is already in the middle of the house, the rain above will definitely not have much effect, but even if you do a few more layers, it will definitely not hurt.

Next is Song Xuan's well-designed multiple moisture-proof mats.

At the bottom is a thick layer of plant ash, five or six centimeters thick, surrounded by a fence made of bamboo.

This fence is different from what the tribe did before, they are all lined up with bamboo boards three or four centimeters wide, and there are almost not too many gaps in the middle, and there is only a distance of five or six centimeters between the fence and the surrounding area, and this gap is naturally filled with thick grass and wood ash.

In addition to its strong moisture-proof function, water vapor can also be observed very obviously, such as in this season, if it is in a humid place. The ashes quickly clumped, and you didn't even need to touch them, but you could tell if there was any moisture in them.

If you want water vapor to come in, you have to pass this level first, and I believe that as long as the water is not splashed directly, most of the moisture will definitely be blocked.

Next is the woven thatched mat, Song Xuan still prefers straw in his imagination, mainly straw, which is relatively easier to obtain, and he brings it back by the way when he harvests rice.

But at this time, there was no one in the tribe, almost all the straw in those acres of land last year was rotten in the ground, and the rest was burned into fertilizer by Song Xuan.

Now it can only be used with thatch, but the function is similar, and now the cellar is only an experimental one, mainly to observe its ability to resist moisture.

Song Xuan can only pick when there are more winter people in the tribe, so that everyone can dig it, and now that the rain has passed, Shi Meng and they naturally ran out again.

Fortunately, there are not too many people in the next steps, Song Xuan can call it casually, and the two of them can be busy.

With this layer of thatched mats, basically the entire cellar has been formed, and then it is time to wait for the animal skin of Shihua.

Song Xuan asked Shihua to splice out a few large animal skins, and when the time came, hang one on each side and spread another one underneath.

If the rice is poured directly into a large package surrounded by animal skins, the animal skins also have a very strong moisture-proof ability, as long as the package is properly packed, even if it rains outside, the things inside will not get wet.

Therefore, Song Xuan's requirement for Shihua was to make the stitches as thin as possible, of course, even if they were fine, after all, they were needles polished from animal bones, and the thinnest needle in the tribe was far thicker than the thickest one Song Xuan had ever seen before.

The bone needles in the tribe are comparable to the thin needles used to make sweaters in later generations.

But even with such a tool, the animal skin that Shihua handed over to Song Xuan, the eye of the needle was not obvious, and the distance between each eye was only about half a centimeter.

You can still see the level of the stone flower.

Of course, this is also due to the fact that Song Xuan gave him some fine threads made of hemp, and it is difficult to achieve this effect if you want to use animal skin ropes or threads of other things.

In addition to the importance of the cellar, the most important reason is that the hemp in the tribe can be harvested and used soon.

If you don't keep the seeds, you don't have to wait until it's completely dry before harvesting, or how long it will take, the hemp should have completely reached the point where it can be used, and there will be no shortage in the tribe at that time, so there is no need to pick too much now, in addition to leaving enough to make arrows, other places can also use the little inventory in the tribe if they are exactly necessary.

Of course, there is not much inventory in the tribe, and a quarter of the large animal skins have been used up alone.

Song Xuan estimated that most of them should still be used for the sewing of clothes, otherwise it might not be enough to use them casually.

After the contents of the crypt are ready, the work of the stone class and the stone has also been completed.

Although the brick kiln could not burn a whole piece of this size, the stone still fired six rectangular pottery plates, and two pieces could be put together into a single piece, and there was no need to even hold it up with something in between.

The more complete the pottery plate, the stronger the moisture-proof ability, Song Xuan told him when the stone was made, so the stone was also carefully designed, the two pottery plates in the middle are different from the two sides, in addition to being a lot wider, there are a lot of gaps on both sides of him, just enough to stuff the pottery plates on both sides to the bottom, so that there is almost no obvious gap between the six pottery plates.

Song Xuan also let the stone spell out and test it, even if he poured a few basins of water, the pottery board did not leak a drop.

The waterproof effect is still quite good, with these ceramic plates, plus animal skins and the ceiling above, the effect will not be much worse than the set below.

Now there is not too much rice left in the tribe, and most of the remaining ones are reserved for planting, which can't be directly put in to see if it will get wet, and the risk of doing so is too great, but it's not impossible, Song Xuan directly took a clay pot and piled some grass and wood ashes inside.

The upper cover is made of wood to build a shelf, and the same is true for the shelf.

Further up are the pottery plates and sheds, which are made in strict accordance with the size, so they can be said to be tightly fitted after being put on, except for the top shed.

The roof of the shed extends out on all sides, a section of about 20 centimeters, and the shed and pottery slabs are filled with animal skins and thatch all around, so as not to leave too many gaps.

Next, it depends on whether there will be too much moisture in the cellar during this rainy season, and in order to increase the difficulty, Song Xuan also put several basins of water in it, in order to aggravate the humidity in the house.

Even the ventilation hole and door were sealed, it can be said that the moisture inside will only get bigger and bigger, and it is not so easy to spill out, Song Xuan will sprinkle some water on the ground every two days.

The effect is still relatively obvious, at least as soon as you open the door, you can clearly feel that the inside of the house is much more stuffy than the outside, especially now that the weather is also hot, the inside is stuffy and hot, and it is almost the same as the steamer at noon.

Song Xuan also knew that this kind of condition was naturally a bit harsh, and under normal circumstances, the tribe would definitely keep the house as dry as possible.

Even if a few fires are lit in the house during the rainy season, when the humidity is heavier, the moisture will be discharged quickly, but the more stringent the conditions are now, the easier it will be for the tribe to preserve these grains in the future.

Although it is said that if the goods are received smoothly this year, the output will definitely not be low, but there is still a big distance from Song Xuan's heart to completely regard it as a staple food.

If it is calculated according to one pound of rice per person a day, it is definitely not enough to have eighty or ninety thousand pounds of rice in the tribe, but children must not be able to eat so much, and in winter, they will definitely eat a little less, but even if they are saved repeatedly, forty or fifty thousand catties must be needed.

This is still only calculated according to the current manpower of Teng Snake.

One or two thousand catties of rice can still be managed more finely, but if there is more, maybe when it will be ignored, an oversight, if the cellar's own strength is not enough, the impact will be very heavy, Song Xuan dare not imagine how serious the consequences are.

Especially the tribe must be like now, always keep the food for about half a year, the meat is cured and the slender is not much affected, as long as it is not bad, it can be eaten when it is taken out to the sun, but the rice is different, if the moisture is more serious, it will not be eaten at all, not to mention that sometimes it will sprout or something.

Therefore, if you are strict with it, you will not make mistakes, and even if you toss it like this, you don't use much manpower, and the largest part is still used in excavation.

After the manpower is sufficient, the digging speed will not be too slow, this time it is mainly the first half of Song Xuan who let everyone dig hard and delay too much time.