The earthen houses prepared for those mountain masters were still very fast to build, and the new home that Lin Sen had prepared for himself was the one that Lin Sen had prepared for himself, which was to be used as a fortress for all the villagers to defend against foreign enemies if necessary, not only solid, but also enough rooms to live in.

Fortunately, Lin Sen went to Hu Jian in later generations, but he turned around the tulou over there, otherwise he would not have the idea of building a tulou to defend against the enemy.

And the template he referred to was the "Eryi Building", the treasure of the round building, which has a series of titles such as "the first floor of China", "the treasure of the folk house" and "the king of the tulou".

It's not just a big scale, it's a scientific design and a reasonable layout, which meets Linsen's needs.

But it is precisely this scientific design that makes it take a long time to build. Lin Sen's vision of the circular earthen building, the bottom of the outer ring should be made of hard granite stone, this thing is invulnerable, even in the event of a flood can withstand it, but after the construction is completed, most of them will be used as warehouses.

The second floor is rammed with raw soil, mixed with sand and bamboo, and the reinforced concrete structure has the same magic, such a wall is firm and solid, but also has good earthquake resistance and wind resistance.

After all, the circle itself has such an effect, and in the case of the same circumference, the internal area of the circle is also the largest, which is not only conducive to defending against external enemies, but also can obtain a larger living area, which is the reason why Lin Sen chose the circle.

Of course, the higher you go, the thinner the wall will be, which can be regarded as reducing the burden on the wall.

In addition, Lin Sen divided the whole building into 12 units, and the structure and function of each unit were clear and self-contained.

On the fourth floor, the extra-thick wall is used to shrink by one meter, as a passage into a hidden corridor to surround the whole building, so that the units can be connected and communicated, and the privacy independence and cohesion are perfectly combined.

In addition, there is an hourly leakage device on the gate, each unit is equipped with a "zhi" type curved sound transmission hole, and there is a dark passage leading to the outside of the building, which is conducive to strengthening internal and external contacts and resisting enemies.

However, what is different from the Eryi Building in later generations is that Lin Sen also opened a small flared window for each room on the second and third floors.

At the same time, it can also be used as a shooting hole, which is convenient for their farmers to use bows and crossbows to resist foreign enemies, and they don't have to worry about the enemy's counterattack.

Then bring the water from the spring outside to the open space in the middle, and you will not have to worry about the enemy cutting off the water and food.

This kind of work involves digging tunnels, and Lin Sen will personally handle it to ensure their safety, but more importantly, Lin Sen has a way to be lazy.

All he had to do was plant a few trees in the desired position, and then control their roots, and keep heading towards the ground, in the direction of the outside of the building.

Don't underestimate the power of plant growth, it's enough to take root in concrete, it can break through stones, and it's not a problem to get out of the ground, it's just that the roots need to be extra thick in the tunnels.

After that, it's very simple, just vacate the middle part of the tunnel, and those tree roots can continue to grow on the walls of the tunnel, which can be used as a support for the tunnel, and can also hold more soil and strengthen the tunnel.

Originally, it might take a lot of people, and it had to be completely assured that people could carry out the arduous work in secret, but when I arrived at Lin Sen, it was done so easily and happily, not to mention the secrecy, and the progress was unparalleled.

In addition to these retreats that are related to the life of his family, Lin Sen did it himself, and Lin Sen taught Xi Junmai to make overall arrangements for other tasks.

As long as he explains his thoughts clearly and sets the big framework, the rest of Lin Sen believes that Xi Junmai can do a good job.

After studying mathematics for so long, it's time to put it to use, and if he can use small things like pulley sets again, then the efficiency will definitely not be too low.

Putting aside the hot construction site for the time being, Lin Sen took some effort and went to Cheng's Zhuangzi with the gifts he had prepared a long time ago.

He still has to admit the previous things, not only did he accept so many dealers, but also prepared a group of guards to prepare for the battlefield, such a care is not good to thank, it is too much to say.

Lin Sen quickly sat on the big kang in Cheng Yanjin's house, and chatted with Cheng Yanjin while eating hot pot. Not only is Cheng Yanjin, the main family, but Qin Qiong, who is still in the recovery stage, is also here, and even Xie Yingdeng, who has not appeared for a long time, is rarely waiting here.

The focus of their concern is naturally the battle with those gangs not long ago, they have heard a little about the strength of these bandits, and they are naturally a little curious about how Lin Sen passed the test.

When they heard the chain reaction caused by the unlucky four masters, Cheng Yanjin and the others laughed at the hammer table, and tears came out.

But in addition to being funny, he also felt a little afraid of Lin Sen's danger.

Of course, more than that, it was his heartfelt admiration for his good luck against the sky, and for this reason, the eyes of Lin Sen were a little different.

Is luck important? Many times it is actually very important, especially those who have experienced the turbulent times at the end of the Sui Dynasty, and they have a lot of feelings about it.

Then Shan Xiongxin is strong enough, right? A few of you didn't say that you would win him, isn't it just bad luck and haven't been able to end up like that with the right person, of course, this has a lot to do with personal vision, but I have to say that luck also accounts for a lot of it.

They have been able to come so far one by one, without being hit by a dark arrow, and without dying under the arrows of sorrow, it should be said that it is also due to their own good luck.

Then for a person who is unlucky, or a person who has the favor of destiny, they must look up to it again, so Lin Sen's weight in their minds is even heavier.

"Poor Dao has been a little short of manpower recently, so I haven't been able to mobilize some to help you, I hope you'll forgive me!" Xie Yingdeng solemnly raised his glass to apologize to Lin Sen, he has been busy grabbing territory with those bald heads recently, and there are really a lot of private fights.

"Hey, don't say that, this time, thanks to the help of your men, you have overthrown most of the most threatening archers, otherwise the battle will definitely not be so easy." Lin Sen's words are definitely from the heart.

"Why don't I have a few good guards under my hands, how about letting them go to your Zhuangzi?" Cheng Yanjin and Qin Qiong said after looking at each other.

"That's what so-and-so means." Qin Qiong nodded affirmatively.