In addition to the passes with very important strategic status in the Warring States Period, the Great Wall, which stretched between the mountains and ridges, was mostly made by the builders on local materials and used rammed earth to build the city.

Compared with the entire Ming Great Wall being built with bricks, the Qin Great Wall has much less project volume.

"Come on this mountain, let's stand up the rack first."

Sen held the design drawing in his hand and commanded the staff to go up the mountain first.

On an open flat ground at the foot of the mountain, craftsmen built a tall and strong wooden tower. The foundation of the tower was opposed by huge stones. On the other side of the wooden tower, three thick ropes were tied to the stones underground to form a traction force.

Three hours later, the wooden tower on the mountain was built. Two wooden towers face each other from a distance.

"The next step is to install pulleys."

After getting Meng Tian’s design drawings, Sen directed the craftsman camp and created a pair of pulleys overnight to test the effect of the pulleys first.

The garrisons came up, picked up the iron chains on the ground, and placed them on the wooden tower under Sen's command.

"Where is the basket? Take the basket over quickly."

The garrison brought a large basket, filled with mud, a full hundred kilograms.

"Hang the basket on the iron hook under the pulley, slowly pull the iron chain, and send the basket to the mountain."

After hearing Sen's words, the two guards came out, grabbed the chain with both hands, and slowly pulled it backwards.

As the two of them pulled, the basket gradually rose, and under the surprised gaze of everyone, it rose steadily towards the mountain like a cable car.

After a cup of tea, the basket finally rose completely to the mountain. Only then could I hear a wave of deafening cheers coming from the opposite mountain.

"Five doctors, this pulley easily sent a large basket of soil to the mountain. In this way, wouldn't we save a lot of effort?"

The garrison soldiers surrounded the wooden tower that installed pulleys and searched back and forth, their eyes full of heat. With this thing called pulleys, when building the Great Wall, they didn't have to carry the soil up the mountain.

"Of course, otherwise, what will I do if my father worked hard to build pulleys?"

Sen shook his sleeves, his hands behind his back, and his eyes kept blinking.

Meng Tian once said that tools liberate human power, and this sentence makes sense.

After witnessing the convenience of pulleys, most of the concerns in their hearts were gone.

Everyone knows that even if it is just the Great Wall connecting Qin and Zhaoyan, the project volume is also quite large. It is not easy to transport the construction materials from the bottom of the mountain to the steep peaks.

Now that there are pulleys, the garrison soldiers can foresee that at least the hard work can save a lot.

In less than two months, a large number of wooden towers were erected on the construction site along the Great Wall of Beidi, with pulleys specially built on it.

The garrison soldiers came in groups like tug of war, and they were always happy.

The saved manpower is responsible for monitoring the Xiongnu prisoners and teaching the Xiongnu prisoners to work well for the Qin State.

"General, since there were pulleys on the construction site, the progress of building the Great Wall has been significantly accelerated. According to the current construction speed, the Great Wall in the North can be cultivated into one piece in at most two years, realizing the spectacular scene of the Great Wall that the general said."

Looking at the busy construction scene in the distance, Feng Wuze, who had always been serious, couldn't help but nod in relief.

"When you can't always think about solving it with manpower. When you can't solve it, you have to use your brain to invent what kind of tools to solve engineering difficulties."

Meng Tian took the opportunity to instill tools and liberate human power in the people around him.

"Thank you for your advice. This time, I really realized the important role of craftsmen. In the future, I have to improve the treatment of craftsmen and encourage them to invent new tools."

Feng Wuze manages the logistics camp. In his eyes, craftsmen are no different from ordinary soldiers.

However, in Meng Tian's view, these craftsmen who followed the army were equivalent to engineers and scientists in later armies.

The war between the Huns came to an end. Meng Tian led the short army camp and conducted on-site inspections along the Great Wall, arranging local county magistrates to contract the city walls in sections.

Meng Tian was authorized by Ying Zheng and was fully responsible for defending against the Hu people in the north. Meng Tian had the power to control the northern border counties.

The Qin State unified the six states and implemented the county system, which had a clear advantage. The local county magistrates appointed by Xianyang would at least not be vague when implementing the orders of the central government.

Border counties in various parts of the north have been invaded by Hu people abroad for many years. They are not psychologically resistant to building the Great Wall and improving the border defense system.

After Meng Tian arrived in Dai County, he sent someone to renovate Li Mu's tomb, migrated to eight families, and lived near Li Mu's tomb, responsible for taking care of the tomb, and regular sacrifices were held every year.

When Li Mu was guarding Dai County, the people of Dai County lived and worked in peace all year round. When the Huns came, the soldiers under Li Mu often had early warnings. Dai County people had enough time to withdraw to the pass and would not suffer any losses.

When Li Mu completed the training, he led the children of Dai County to attack, showing the enemy with weakness and luring them to benefit, and annihilated 100,000 Xiongnu people in one battle.

After that, as long as the Huns saw Li Mu's battle flag flying at the head of Daijun, they would not dare to go south.

In the minds of the people of Daijun, Li Mu has a very high prestige.

Meng Tian set up a temple for Li Mu and made a grand sacrifice, which gained some favor from the elders of Dai County.

"General Meng, you beat the Huns away, General Li also beat the Huns away. When the Guizhou heads in the border areas are grazing and arable, they no longer worry about the sudden smoke of wolfs in the distant beacon towers. In this way, whether it is the Qin people or the Zhao people, it is enough not to be harassed by the Huns."

In the Dai County, the county seat was in the Dai County, and in the county magistrate's mansion, Meng Tian was holding a banquet to entertain the fathers of Dai County.

The so-called elders are all influenced locally. Whether they are respected or not, but they are all quite old.

The ancients were all a little bit of face. Meng Tian acted a little low-key and was entertaining people with delicious food and drinks. In his words, he revealed that his children who were going to recruit the people in the meeting to serve in the officialdom. After several rounds of wine and chatting, the Dai County elders present gave up the remaining hatred in their hearts.

Since the Warring States Period, there have been several wars between Qin and Zhao, and the people of Zhao have suffered heavy casualties, but most of them are the children of Taiyuan, Shangdang and Handan of Zhao. The population of Dai land is small and needs to defend the Xiongnu in the north all year round. The children of Dai County who died at the hands of Qin have not many.

Because of this, the hatred of the people of Daijun towards Qin was not as strong as that of the people of Zhao in the south.

"Mencius once said that the world is united. The seven heroes of the Warring States Period stood together, and brothers fought against the wall, and they fled in vain, and only the blood of the Chinese people was shed, and the Hu Man outside the Great Wall was cheaper. Now Emperor Lai Shi was wise and wise, and the world was unified. We should raise swords and swords to defend against their insults, and teach the Hu people outside the Great Wall a lesson."
Chapter completed!