The cavalry all over the mountains and fields instantly seemed to have ink stained the steamed buns. The sparse forest was covered with Mongolian cavalry, but the speed of the Mongolian cavalry was also reduced.

"Roar the alarm bell! Gather the team!"

The alarm bell is nothing more than the ancient bell found by the soldiers in the nearby abandoned temples, but it would be better to use it as a tool for delivering messages.

The continuous sound of gold and iron reeled between the entire mountains and forests, and the echoing sound suppressed the sound of galloping horses. It was clearly transmitted to a range of more than ten miles in a radius.

Within less than a minute of the sound, the open space behind Han Zhenhan was already full of people. Because of the crowding, there was no formation at all.

The fortress built by Han Zhenhan is a matter of being the best or not being the best. It can be said that each person has his own strengths. As a boy, he likes castle knights, war is a small complex in the hearts of most men.

Han Zhenhan was fortunate to read a book about castles while studying in the United States, "Medieval Castles" in China's city buildings. Han Zhenhan often played in those places since he was a child... It can be said that he learned a lot.

The current Daying of Chengdong was built by Han Zhenhan in the form of a Tibetan gate to build the fortress in front of him. The fortress actually covers a small area, only three or five acres of land, and there are no large buildings inside the fortress.

Looking around, the stones and woods of the other party were poured out, and there was only one and a half underground bunker in an inconspicuous corner. There could be said to be Han Zhenhan's command post.

This fortress actually has a secret. There are six or seven thousand people hiding in this fortress, but now there is no tent or house in it.

This is Han Zhenhan's cleverness. Han Zhenhan once saw a method of building a city in Arabia in his book. It is both convenient and fast, but it also has a fatal disadvantage, which is its lack of ventilation.

That is the underground building, but the problem of non-ventilation is a problem for foreign students like Han Zhenhan who are studying in the United States?

Obviously not. Just make a few large hand-crank fans and let the children or women shake them, otherwise they have nothing to do in the dungeon.

Civil engineering is a very technical task, especially digging a dungeon. If you encounter a landslide, it will be a death.

But this is not a problem. The hardworking Chinese people, who are not farmers in the fortress east of the city, deal with the land every day, and no one has ever dug a vegetable cellar and authentic.

However, for safety reasons, Han Zhenhan still implemented a plan that is to distribute branches, underground fortifications and circular links, opening ventilation channels between each layer. Nearly four layers have been dug in five days, and the excavation work has not stopped now.

The excavated soil, sand and gravel were brought to the ground, and the city walls continued to rise, and more than 6,000 people worked at the same time. Under the leadership of the Brotherhood, everyone performed their duties and worked very efficiently.

And this is because of the large amount of wood and tools and materials that have been prepared long ago.

In addition, there are also tunnel caves below the city walls in various directions, and the same is true above the city wall. Although the wall of this fortress was temporarily built, the compaction process was not sufficient. However, Han Zhenhan prepared a large amount of wood. The rational use of civil and timber made the entire city wall extremely solid.

The city wall is more than two meters wide. Although it is not comparable to the tall and wide city walls as tall and wide as Yuncheng, Han Zhenhan is unique in design. A one-meter-deep air raid shelter is dug under the city wall corridor. You can jump directly into the pit in the middle of each two defense position.

This is also the preparation that Han Zhenhan made for knowing the tactics of the Mongolian cavalry. Han Zhenhan also ordered people to do a lot of similar preparations.

So much so that the people in the fortress in the east of the city were extremely tired, but they were much more tired than not being prepared. They were not quick to sharpen their guns in the face of battle. The more they were prepared, the less blood would be bleed during war.

Han Zhenhan felt sorry for his brothers. If Han Zhenhan had no conscience, he would have wanted the peripheral members of the Brotherhood to take the lead.

Reason still defeated Han Zhenhan's reluctance. The peripheral members of the Brotherhood became the auxiliary soldiers of the former New First Regiment of War. It was a luxury to have three or four auxiliary soldiers on one person.

These days, Han Zhenhan is more tired than anyone in the fortress. What he is tired of is his own brain, and what he has to consider is the survival of thousands of people in the entire fortress.

"The Mongols have rushed to our city. I believe most of you have also heard about what the Mongols have done on the other side. In the past few days, you have been working hard, not for others, but for living."

Han Zhenhan's voice was not very loud, but because of the silence of everyone present, his voice could be conveyed to everyone's ears.

I don’t know when, women and children who were originally in the underground fortifications also came out. Maybe they also heard the alarm bell.

"I don't know how many Mongolians can be blocked by our fortress, but as long as I, Han Zhenhan, are still alive, I will not let your family die first."

Han Zhenhan's loud promise was exchanged for a dead silence. After a moment, more than a thousand men in front of Han Zhenhan arrived in unison.

"People are there, the city is there!"

"People are there, the city is there!"

"People are there, the city is there!"

"Dress in place!"

After Han Zhenhan stopped, he issued an order directly, without any other nonsense. As long as everyone still has fighting spirit, there is hope of survival.

Just as Han Zhenhan was boosting his morale, the cavalry under the city had already arrived at a place of arrow. Han Zhenhan felt the changes behind him, turned around and looked closely at the other side of the big ditch under the city.

A team of Mongolian cavalry led by the leader was surrounded by a general wearing a round hat and iron armor, and an angry look on his face. A white flag symbolizing the rights of the Mongolian Empire was held in his hand.

There was another person beside him at this moment. This person was still an old acquaintance of Han Zhenhan. He was not someone else but worshipping. He was smiling at the moment and was talking to the general in charge.

The general saw Han Zhenhan standing on the top of the city and looked over. After seeing it, he turned his eyes and looked at the top of the city.

Seeing Han Zhenhan climbing to the top of the city, he rode his horse forward naturally, and walked dozens of steps. No one followed him, but he was the only one riding forward.

"Brother Han! Oh no, my niece, son-in-law, I'll introduce you to you. This is your distant uncle, General Batulu."
Chapter completed!