The current workshop is a brick mill and a tile mill, the brick mill can not be in a hurry, the weather is hot, there is a lot of hay, and it can be bundled into thatch to cover the roof, but the brick mill needs to be built as soon as possible.

Liu Yunzhai is easy to defend and difficult to attack, that is for ordinary people.

For the officers and soldiers who are proficient in the method of siege, such a terrain, they can also smash the defense with people, and the mountain is full of ordinary villagers at the moment, and there is a lack of water and food at the bottom of the mountain, so it is impossible to guarantee that no one will break into the mountain.

Li Xiuyuan called Bai Xia and Wu Ziying, and the three of them returned to his room, sat down at the table, he went to the counter and flipped through it, and took out a book that had been illustrated.

"Look"

Bai Xia and Wu Ziying looked at it according to their words, and saw that the topographic map of the entire Liu Yunzhai was painted on the book, and the surrounding scenery was displayed in the form of paintings, which was lifelike, and the houses of the villagers in it were painted as if they were real objects.

Li Xiuyuan's painting skills are much better than Bai Xia's.

Bai Xia touched his nose uncomfortably, thinking of the map he had drawn at the beginning, he couldn't help but feel a little ashamed.

The pages of the book are turned back, and the topographic map extends little by little, to the edge of Liu Yunzhai, where Li Xiuyuan sketches the appearance of a circle of walls with charcoal.

Wu Ziying was well-read, and after just one glance, he saw the problem.

"Here, here, needs to be changed"

"And here, if you build it like this, the foundation is unstable and easy to collapse"

"Here, you can add a whistle"

Wu Ziying pointed out all the problems on the picture, Bai Xia stretched out his head and leaned over, and saw Li Xiuyuan nodding while holding a charcoal pen to revise and correct.

Although she couldn't understand it at all, it didn't prevent her from feeling that the changed picture seemed to be a little better than the previous one.

Bai Xia recalled the military bases he had seen in his mind, and his heart for transformation was a little ready to move.

Thinking of it, she took out a book and came out, regardless of Wu Ziying and Li Xiuyuan, she began to draw herself, her painting skills are not very good, at most she can only draw a general outline, and then write simplified Chinese characters in different areas.

She recalls in her head and paints in her hands.

Fortunately, the drawing skills are not good, but there is no problem with horizontal and vertical line drawing.

"What are you?"

I don't know when, Wu Ziying's eyes fell on the planning map that Bai Xia was drawing, and the slender white fingers were full and round, and gently fell on the paper, forming a sharp contrast with the slightly yellowed paper.

"Sanya, what are you writing here?"

"Living Area"

Her fingers moved again and asked, "What about this?" ”

"Trade Zone"

"What about this?"

"Growing area"

Wu Ziying: ......

Listening to the names of each area, you can probably understand what this means, but this is the word, no matter how you look at it, it is missing arms and legs, and I am afraid that only Bai Xia can recognize it.

Her gaze moved to Li Xiuyuan's paper, the handwriting was neat and graceful, no matter how she looked at it, it didn't look like it was written by a five-year-old doll.

Compared to Bai Xia's ghost-drawn talisman, it is completely one heaven and one underground.

"Have you read a book?" A trace of pity suddenly rose in Wu Ziying's heart, and he reached out and rubbed Bai Xia's head, Bai Xia suddenly stiffened, and moved his head away with a wooden face, this dog-like action was not necessary.

Under Wu Ziying's loving eyes, she shook her head.

Read, but not this world.

"Then I'll teach you to read and write" Wu Ziying is very knowledgeable, the family did not let her read because she was a woman, in order to train her to read and write, her father even specially invited her to have a female master, and even Chunxing next to her followed her to read and write, and she could write and calculate.

"Do you have time?"

It's not that Bai Xia doesn't want to learn, he had the idea of learning to read and write a long time ago, and he has been running away from the famine, and he didn't have time.

Now that she has settled down, she naturally has to study hard, after all, she doesn't really want to experience this kind of thing again when the Heavenly Dao Lord opened the back door but opened to the illiterate.

It's just that Wu Ziying was entrusted by Li Xiuyuan to keep an eye on the brick mill and tile workshop, the current bricks are mostly adobe bricks, if they are built according to the standards of the city wall, they must at least use green bricks, green bricks are strong and durable, but they are not easy to burn.

Although Wu Ziying has a formula, when it comes to practice, there will still be many problems, and there is no way to solve them all at once.

"It's okay, after you get up every morning and practice in the morning, study with me for half an hour" Wu Ziying elbowed, and the time could still be moved.

Bai Xia nodded.

"But I want to make tofu first, and some other food."

"There are no wild things in the mountains, everyone has no meat to eat, and after soy products are made, they can be supplemented with protein."

In addition, it can also enrich everyone's recipes.

"What is protein?"

"Ah...... It's something that can replenish the body."

"I'll tell you what I think, you and Brother Yuan will see if my plan is okay, if it's okay, you can calculate it according to my ideas, and see how much wood and stone are needed" As he spoke, Bai Xia told Wu Ziying about the picture in his hand.

In fact, to put it bluntly, it is to divide the whole village, the innermost is the living area, the periphery is the trade area, and then the periphery is the planting area, and the outside of the planting area is the military area.

The first circle is not large because of the population, and the later circle can be extended outward according to this pattern.

It's basically the style of a main city.

Once the perimeter is breached, everyone can retreat to the innermost, and the planting area is enclosed in the military zone, which can effectively protect the crops planted by the villagers and avoid being ruined.

"This kind of protection on all sides can protect the safety of the people to the greatest extent" Wu Ziying's eyes lit up, and she was a little curious about how Bai Xia's head came up with melon seeds.

In addition to being able to defend against external enemies, this can also better manage internally.

If there are more walls formed in the outer districts, once someone becomes a traitor, even if he can run out of the first district, there are countless defenses outside that can catch him.

"In this case, the people of the original Liu clan can be arranged in the outer city."

"Do not interfere with the people of the inner city"

"However, this planting area still needs to be well planned, to grow food, water is indispensable, how to bring water in, and how to prevent people from catching turtles in the urn."

Wu Ziying's fingers dotted the various areas on the paper, his eyes were thoughtful.

At this time, Bai Xia next to him naturally said: "Fight the tunnel"

"Authentically?" Wu Ziying and Li Xiuyuan looked up at her together, and Bai Xia said as a matter of course: "Yes, Liu Yunzhai has a lot of cellars, I have observed before, although these cellars are very rough dug, but the structure is tight, and there is no sign of collapse, which means that the soil here in Liu Yunzhai is dense, and it is completely possible to dig tunnels."

"Forming a labyrinth underground can solve the problem of being trapped in the city"