In the Xiande Hall, Li Shimin was discussing matters with Fang Xuanling and Du Ruhui. When he heard Tang Ping coming, he called him in directly.
"Your Majesty, Lord Fang, Lord Du, and Lord Changsun."
Tang Ping greeted them one by one after entering.
"Master Tang, there is no need to be polite, but what's the emergency?"
The chubby Changsun Wuji smiled and said that it turned out that he and Tang Ping had a normal relationship, mainly because Tang Ping was too popular and his son Changsun Chong was far behind compared to him. He was worried about the status of the Changsun family in the future.
But this time Tang Ping found someone to treat his sister's qi disease. According to Changsun, after taking medicine recently, she has never had another attack.
Although Tang Ping may affect the status of the eldest son's family in the future, he has saved his sister now. As long as his sister is still in the position of queen, the current status of the eldest grandson's family is unshakable.
Therefore, Changsun Wuji's attitude towards Tang Ping has improved a lot. He has no choice but to find out that he has high blood pressure. He has to pay attention to his diet and sometimes has to take antihypertensive drugs given by Tang Ping. His attitude is not good. Can it be better?
"I just realized today that it has not rained for more than a month. Is it a drought?"
Fang Xuanling didn't expect that Tang Ping came here for this matter, so he nodded and said, "There is indeed less rain this summer, especially in the northwest. This is also the main reason for the drop in river water levels near Chang'an."
Because the water flow throughout China basically flows from west to east, and Chang'an is known as the Eight Rivers that surround Chang'an. The main river water sources come from the northwest of Chang'an. There has been no rain there for a long time, which has caused the current drought.
After finishing speaking, Li Shimin asked: "Why did you remember to ask this? Is there any other way you can solve it?"
There was a drought last year, and Tang Ping came up with the plan for the keel waterwheel at that time. So when drought happened again this year, no one asked him. They thought they had to find a solution, and Tang Ping was able to solve it last year. No need to wait until this year.
But now that he took the initiative to come over and ask, maybe there was really a way, some hope rose in the hearts of a few people.
And Tang Ping did not disappoint them: "There is no rain here. The water on the ground has indeed become less, but there is water underground."
Several people thought Tang Ping was going to say something, but this is the result?
Changsun Wuji smiled and said, "Master Tang, you are talking about digging a well, right?
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? The civilian husbands we have recruited in the past two months are mainly responsible for digging wells in various places, but it is not appropriate to dig wells! "
We must know that as early as in the Hemudu Cultural Site in Yuyao, the existence of water wells has been discovered, which means that Chinese people have used groundwater for a long time.
However, after so many years, there has not been much progress in the technology of digging wells.
Most of the wells dug by the private sector are circular. The diameter is usually 1 to 2 meters, and the depth is generally several meters to 20 to 30 meters. During construction, people can directly go down into the shaft to excavate earth and rocks.
This type of well is only suitable for mining shallow groundwater.
Not only is it difficult to dig, but it is also prone to danger. The walls of the well must be reinforced while digging.
The first ten meters are easy, but after that, the difficulty and danger increase exponentially with every additional meter.
So a few people thought that Tang Ping's idea was to dig a well, which was what they were already doing.
"It is indeed digging a well, but if I can make a new well-digging machine and use a steam engine to drive it, I can dig a well of about ten meters in just half a day."
"What?"
It seemed that several people in the palace were stunned.
You must know that even if a well is only dug about ten meters, the soil must be dug and transported, and the walls of the well must be strengthened.
This series of projects will take seven or eight people at least more than half a month. If the soil is too hard or there are too many rocks, it may take longer.
And there is no guarantee that water will be found every time you dig. If not, it means that most of the time is wasted, and you have to move to another place to continue digging.
This is also the reason why the efficiency of groundwater use was low during this period of the Tang Dynasty. Everyone knew that there was water underground, but it was not easy to take it out.
But what does Tang Ping say now? Digging ten meters deep in half a day?
Seeing that everyone didn't believe it, Tang Ping just said that he would call the craftsmen from the Ministry of Industry and teach them.
So soon, Duan Lun, the minister of the Ministry of Industry, came with the craftsmen, and Dai Zhou, the minister of the Ministry of Civil Affairs, also came.
Tang Ping had seen rural thugs digging wells when he was a child, and he had checked a lot of information when he came here. He had already started drawing on Li Shimin's desk with pen and paper.
Fortunately, here are the signature pens, rulers and other things that Li Yuanji picked up from Shanghe Village without incident.
It made it much easier for Tang Ping to draw.
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After finishing the painting, he began to explain to the craftsmen in the Ministry of Works.
This time it is a relatively big one. Shanghe Village can also get it, but it will definitely not be as fast as the Ministry of Works.
The drought problem needed to be solved as soon as possible, so Tang Ping directly called the craftsmen from the Ministry of Industry.
"Understand? In the end, we are going to use the steam engine to drive this drill bit to drill the well."
The craftsman from the Ministry of Industry nodded. He understood Tang Ping's drawings clearly. They had seen the drill bit when they went to Shanghe Village. Brother Wang Tieniu had it. They said it was called a pistol drill, which was used to drill holes in wood very quickly.
It's a pity that electricity is not available in their Ministry of Industry.
But now the steam generator is slowly being completed, and it is estimated that their Ministry of Industry will also be able to use it by then.
The picture Tang Ping is drawing now is actually an enlarged drill bit drilling into the ground.
The drill bit on the gun drill can drill through wood, and this enlarged one can drill through mud, so there is no problem.
"How's it going? How much does it cost?" Dai Zhou was concerned about this question.
"It's definitely cheaper than hiring a civilian husband!" Duan Lun said proudly. Although Tang Ping was no longer in the Ministry of Works, his heart was still with the Ministry of Works.
You see, if this is a good thing, it is better to find our Ministry of Works. He is worthy of being his favorite successor.
Tang Ping looked at Dai Zhou and said, "If this thing is built, I think we can make a lot of money every day."
"How do you say that?" Dai Zhou's eyes lit up. Anything that can make money is a good thing. This is his realization from the position of Minister of the Ministry of Civil Affairs.
"Everyone knows that the Cui family is helping me sell luxury goods to surrounding countries, right?"
Everyone nodded, who doesn't know about this? The Cui family is now a major taxpayer in the Tang Dynasty. They even took the initiative to pay a luxury tax on Tang Ping's suggestion.
It is much higher than ordinary business tax, but it still cannot prevent them from making a lot of money.
"When the Cui family sells things in surrounding countries, they also sell salt, and the cost of their salt is not low!"
During the period of Zhenguan in the Tang Dynasty, it can be said that it was a rare time in the entire feudal history when salt was not controlled.
It was not until after the An-Shi Rebellion that the Tang Dynasty implemented the Salt Law, which began to control and tax cigarettes.
(End of chapter)
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244 When there is a drought, dig a well for free reading.
