As early as last winter, when the charcoal was burned, Sima Pianpian had found information about the kiln in the database, and slowly, she also improved some of the structure of the charcoal kiln with this reference, and thus had some basic experience.

For example, make a ventilation hole at the bottom to keep the air at the bottom unblocked, light a pile of dry firewood around the hole to keep it burning, and at the same time put in wood, fill the kiln, and then cover the top, leaving a smoke outlet, and when the white smoke disappears and a flame appears during the firing process, close the smoke outlet and ventilation hole, and you can take it out into charcoal after a day and a night, so that the quality is much better than her previous casual firing.

The principle of burning bricks is similar to that of burning charcoal, but it is relatively troublesome, and Sima Pianpian chose a group of people among ordinary people to study it.

After returning from the plains for the first time, she tried to build a smaller shaft kiln in the hilly area of the basin, similar in structure to a charcoal kiln, except with the addition of a kiln door and three flue openings. She is fired with clay dug from the plains, and in the process of burning, the smoke is observed, from black smoke, to white smoke, and then to the red flame, and then the flue mouth and the ventilation hole at the bottom are blocked in different directions, and the kiln is sealed and burned for seven days and seven nights, and finally, water is poured from the top of the kiln to make the red bricks turn into green bricks. Because she thinks that the bricks are stronger and look better.

It's easy to say, but it's not easy to do, she took the hominids to burn them a few times, and then she asked them to study it themselves, and she was busy training newcomers and overseeing the process of tunnel defense, so she only occasionally went to see it. As a result, after more than two months, the success rate of the kiln group is already very high, and the quality of the green bricks fired makes Sima Pianpian very satisfied.

Burning bricks mainly depends on experience, whether it is the early stage of mud, embryo, drying, precipitation, the middle of the code embryo, fire, ventilation, sealing, or the later watering, kiln, its experience is the need for continuous accumulation and understanding, people who have not done it can not accurately understand, she herself is only on paper, but primitive people can use the principle she said, through guò months of unremitting efforts, to make good results, sure enough, technical personnel still have to be trained in this way......

Among the more than 100 ordinary people brought this time, in addition to cooking for everyone and handling the fur of prey, there are also those who are responsible for other odd jobs, most of them are kiln firing personnel trained by Sima Pianpian.

Some time ago, the kiln group has been practicing the technique of burning bricks and tiles, and in the future, they will continue to use this craft to try to fire pottery, which is also what she has planned for a long time......

At this time, she was leading a group of primitive people to burn bricks.

On the high ground by the river, more than 200 people are being commanded by the kiln team, some of them are building earthen kilns, some of them are taking water, soil and mud, and some of them are pressing out several large pieces of hard mud to be used as a drying ground to dry the bricks and tiles made by the kiln workers.

Sima Pianpian looked at it with a smile on the side, nothing to do with her, she had already handed over the matter of firing bricks and tiles to the leader of the kiln group to be responsible, and when the first batch of bricks could start burning, it would take more than ten days to do it, during this time, everyone would have been making embryos, the shapes were large and small, and they would be knocked out by the corresponding wooden molds, from the city wall to the house, the number of bricks and tiles was a lot.

At this time, the drying field has been covered with a lot of brick embryos, it can be seen that the technology of the kiln group has been relatively skilled, and the bricks made are neat and uniform, arranged on the drying field as if they were lined up as a line of soldiers.

Tian Tian took a collection team to find food, not to mention.

Wan Huo took a hundred people to cut down trees, and the firewood needed to burn bricks had to be prepared in advance, and a large amount of wood was also needed for construction, which was used to build shelves and make beams and pillars of houses.

Xing and Gao Yuan also brought four hundred people, they were building the foundation out of stones, most of them were old members, they were stacking stones and hammering them down, their movements were more skillful, and it was obvious that the previous few construction experiences had added a lot of experience points to them.

Early this morning, Sima Pianpian had already asked Qingxia to dig out a two-meter-deep foundation, and had also prepared a batch of stones in the foundation, the reason why she dug so deep was because she was afraid that the soil of the plain would be too soft and the building foundation was not stable, so she would rather work more hard at the beginning than have an accident in the future. The stones were fetched from the distant mountains, and with the exception of those that required manpower and patience, she would usually find a way to solve them herself in order to speed up the process.

The outermost foundation was used to build the wall, which was about 20 meters wide at the base, and narrower the higher the wall was built, until it reached the top of the seven meters, it was almost more than 10 meters wide. Considering the body of Qingxia, a part of it will be dug in a day, but it is enough for the workload of primitive people for the day.

The foundation of the buildings in the city will be much narrower, and the area set aside by different buildings will be different, which needs to be subdivided one by one, which has been planned on the drawings, and will only start to be built after the outer city wall is built, because only when the defense is guaranteed, Sima Pianpian will rest assured.

Although the plan is detailed, it is still necessary to pay close attention to the specific work, and this time Sima Pianpian will always keep an eye on it, and will not be as often distracted by other things as in the previous projects.

The entire Canglong station will be a huge rectangle in the north-south direction, 2,000 meters from east to west, 3,000 meters from north to south, with an area of 6 million square meters. Some things are either not done, or at least the most perfect thing in her mind to do, which is also one of her guidelines.

What if one day another herd of beasts will attack? What if the orcs come back? When the time comes, what will stand in the way of this vast plain? The only thing that can defend against them is to build a strong wall, a fortress that can be attacked and defended, and it will also allow her to have no worries when she goes out in the future.

If you think about it carefully, the primitive people have nothing else to do except train to deal with orcs and hunting on weekdays, she can spend a lot of time here, after the city wall is built, she will pick up other people to speed up the construction of the buildings in the city, and at the same time, she will also use her own strength to promote the process from time to time, I believe that it will not take too long to complete this huge project......

And she won't allow it to take too long in this matter, and when she arrives this fall, she will see how the orcs will react on the other side of the forest...... Is it true that the human tribes on this side of the plain do not have orcs to attack......