Chapter 482: Pressurized Wells

Soon after Xue Rengui arrived in Andong and took office as the Protector General of Andong, he sent

heavy troops to guard the traffic arteries and important checkpoints in Liaodong and Andong according to Li Chengqian's order. At the same time, 38,200 households were relocated from Andong to the south of the Yangtze River and Huai River, and a large number of Han people were relocated from there to fill various places in Andong to live together with the local people.

These mixed people were recruited, and a group of soldiers were selected to form a reorganized mixed garrison regiment with these people to maintain the security of Andong.

The land was reclaimed, production was rewarded, and the people were cultivated in the fields during the busy farming season and trained during the leisure time. It was strictly implemented in accordance with the equal field system and the fubing system.

Xue Rengui treated the people in Andong with kindness and grace, allowing the former Goguryeo descendants to receive the same treatment as the people of the Tang Dynasty.

Under Xue Rengui's governance, the law and order in Andong was stable, and the people's living standards had greatly improved, and they lived better than before.

Xue Rengui implemented benevolent policies in Andong and loved the people like his own children, so he was naturally supported by everyone in Andong.

As a result, Silla's desire to incite the Goguryeo descendants in Andong to rebel against the Tang Dynasty was disintegrated. Without anyone taking the lead in making trouble, Andong was peaceful.

Chang'an, inside the Daming Palace.

"Everyone! Zhongshushi Di Renjie sent back news that the disaster relief work in Shandong, Jiang, and Huai regions has been successfully completed. The people have food for the winter and will have no problem getting through this winter." Wang Quan said, holding the report sent by Di Renjie.

Li Chengqian did not read it himself, but asked Wang Quan to read it and then tell him the situation.

"This is good news. I was worried that the disaster relief would not go smoothly. I was worried that the people would not be able to get the disaster relief supplies, food, cotton clothes, quilts and other winter supplies distributed by the court."

"I was worried that they would starve to death without food. How could they survive this winter without cotton clothes? Especially being hungry and cold, it is simply unbearable!"

"Now it's good. Di Qing brought back good news. I can sleep peacefully at night." Li Chengqian smiled.

This was the second good news he heard besides the demise of Goguryeo.

"The disaster relief issue has been resolved, but..." Wang Quan hesitated. "

But what? Is there something wrong? Tell me!" Li Chengqian asked with a frown.

"It's just that there's no water in the fields because of the drought. If it doesn't rain next spring, we won't be able to plant crops. Even if we get through this difficult time, it

's just a temporary solution." "The fundamental problem can't be solved, and the people will still suffer. The imperial court has limited food and grass, and I'm afraid it won't be able to provide relief forever." Wang Quan said.

This is indeed a major problem.

If we can't plant crops in the spring, the people won't have a harvest, and if the people don't have food, they won't have food to hand over to the imperial court.

The imperial court's warehouse will have less income, and many facilities will have to stop construction because they don't have enough money and food.

If there is another natural disaster like a flood, the imperial court will not be able to provide money and food for disaster relief, and the inability to provide disaster relief will trigger a series of negative effects.

Therefore, this problem must be solved, and it is urgent.

"Go and call the craftsmen. I need them to make something." Li Chengqian said.

"I'll go right away!" Wang Quan bowed and left.

Wang Quan quickly called the craftsmen to Li Chengqian, and Li Chengqian handed a sketch to the craftsmen.

"You should make the objects in the sketch as soon as possible according to this sketch, the sooner the better." Li Chengqian said. "

Your Majesty! Please forgive me for being so presumptuous, but I don't know what this thing is? How to assemble it?" The craftsman asked while looking at the sketch.

There is no problem in making the parts drawn on the sketch. These are not problems. The key lies in how to assemble them.

The sketch did not indicate how to assemble this thing, nor did it explain its specific function.

"This thing is called a pressure well. Now there is drought in the capital, Shandong, Jiang and Huai regions. Although the court has found disaster relief food supplies, the victims no longer have to endure hunger."

"However, no one can guarantee whether it will rain next year. If the drought continues, we won't be able to plant food, and my people will still have to endure the suffering brought by the drought."

"Although it is drought now, there is still a lot of water stored underground. As long as we can open up the groundwater, we can rely on this pressure well to pump up the groundwater."

"At that time, not only can we solve the drinking water problem, but we can also irrigate farmland, so we can grow crops." Li Chengqian explained.

"I have built countless instruments in my life, but I have never seen such a wonderful thing. The world is really amazing! Now, I have really opened my eyes."

"By the way, Your Majesty, you haven't told me how to assemble this water pressure well, how many are needed? And how to find groundwater?" the craftsman asked.

"This is simple. The water pressure well is made of an iron shell, with a piston on the top and a valve on the bottom. You just need to assemble it like this." Li Chengqian pointed to the sketch and gave some instructions to let the craftsman know how to assemble the water pressure well.

The piston and the valve are both one-way valves. The working principle of the water pressure well is to make the air go up instead of down through these two one-way valves.

When the long handle is pressed down, the piston moves upward, the valve opens, and the air in the lower pipe can be pumped into the upper cavity. When

the piston moves downward, the valve closes, and the air emerges from the side of the piston. This cycle will create a vacuum in the lower pipe, and the water will be pumped up under the action of atmospheric pressure. The function of water diversion is sealing.

The pressure well actually uses the "three points" of the lever principle to pump up groundwater. Its fulcrum, resistance point, and force point are all on the long handle.

After listening to Li Chengqian's explanation, the craftsmen and others were all stunned, "What a work of art! What a work of art!"

"Your Majesty! Now that we have a pressure well, how can we find underground water sources?"

"Just build a pressure well. I need tens of thousands of such wells right now. I have sent people to find underground water sources according to the method I gave, and they will be found soon."

"But before that, you build a pressure well first. I want to try the effect first." Li Chengqian said.

"I understand. I will do it now." The craftsmen bowed and left.

Soon, the craftsmen built a pressure well according to the sketch given by Li Chengqian.

The experiment was carried out in a place with underground water. After the pressure well was installed, the water pressure experiment was carried out. Soon, with the movement of the long handle, the piston was driven to move, and the underground water was pumped up.

The experiment was a success, and everyone was delighted. With a pressure well to pump up groundwater, there was no need to worry about drought.

The craftsmen immediately started to build pressure wells and distributed the wells to drought-stricken areas.