On the way back from the field, Mrs. Tai did not say a word.

When he returned home, he left Wei Renshi alone, and then asked, "What did my son just tell Li Zheng, what is going on?" Without waiting for Wei Renshi to answer, he said to himself: "In the past few days, my son has been talking and doing things, as if he has changed people!" ”

Wei Renshi knocked his head with a smile and replied, "Without him, I'm enlightened." You have to live your life down-to-earth! ”

Mrs. Tai frowned, and asked again: "What my son just said, can it really be done?" ”

"Eighty or ninety percent sure." Wei Renshi replied: "It's all because the Changgu is not high, and there happens to be a dirt slope that is higher than the fields of the whole village. ”

"If you really want to do it, it's to innovate farming tools. If you can think of a child to dedicate to the court, it will be a great merit. Mrs. Tai said, "You shouldn't be so easy to explain the practice. ”

Wei Ren was really strange in his heart, and he felt that these Tang people had a good vision. Regardless of whether it was Li He's mother, Li Zheng, or his own wife, they could all think of the role and benefits of the improved new farm tools at once, and then immediately think of making upward contributions in exchange for credit.

This vision made Wei Renshi a little impressed by the bottom public of this era.

"The focus is on improving the waterwheels." Wei Renshi replied: "And this thing is actually not difficult to structure, when the time comes, others will understand it at a glance." Besides, even if we want to contribute, we don't have a way. Let Li Zheng and the county government come out to dedicate, although some of the credit is shared by them, but we also save trouble. Actually, I'm waiting for something else these days, which is my improved plough. Li He paid for it and made a sample. If it is possible, maybe it can be offered along with this irrigation system. For the merits of the two improved farm tools, why didn't the imperial court reward our family with a few ploughing cattle, a few silk silks, and a few assets? ”

"Confused!" Mrs. Tai stomped her foot in annoyance, and said to Wei Renshi urgently: "Why don't you say it in advance!" Offering farm tools is a great achievement, this is good, layer by layer, into the hands of my son, Xu instinct can revive the lintel of the great credit, there are only some goods left! ”

"How good the money is! With the goods, our family can have a better life. Wei Renshi didn't care at all, and said with a smile: "Maybe you can hire a few long-term workers." Anyway, we don't have a way to do it ourselves, so I can't go to the capital by myself and tell the sage that I improve the farming tools, right? ”

"What did my son say? If it's really about reviving the lintel, the old body can find a way no matter what! Mrs. Tai was so angry that she stomped her foot and turned around and walked into the back room, and soon took out a wooden box, walked quickly to Wei Renshi and opened it, took out something wrapped in silk silk from it, and opened it very carefully, revealing an old book inside.

Mrs. Tai pointed to the book and said: "This is a genealogy, my family is from the Jingzhao Wei family, although your ancestor is not a descendant, he has always been friendly with his family. If Wu'er gives these farm tools to Wei Niang first, let Wei Niang take them back to his home. With the ability of his own family, how can he not find a way to enter and offer? It's not impossible to go directly to heaven and listen to it! Although the credit is returned to the family, but my son can also return to the family because of this merit, and from then on he is the Wei clan of the Eight Classics, regardless of whether he is admitted to the Jinshi in the future, or walking in the world, there is great convenience! Alas, my son is so confused! ”

Wei Ren was shocked when he heard this, but he didn't expect that this body had such a background.

"Wei Du in the south of the city, go to Tianqi five", this sentence can be seen that there is the prosperity of the Wei family and the Du family in the Tang Dynasty.

"This ...... A-Niang never said that she knew me! Wei Renshi said.

Mrs. Tai sighed heavily and replied: "It is also because my mother is afraid that you will be upset, or she deliberately curry favor with her family and try to rely on her family to achieve things without work, so she hides it from you." ”

Wei Renshi stared at Mrs. Tai, thought for a while, and asked, "I'm afraid it's more than that." A-Niang just said that the friendship continues, I'm afraid it's not too good, right? ”

Mrs. Tai's eyes were obviously panicked, her voice became a little weaker, and she argued strongly: "This family ...... Your grandfather is a concubine, and his family has given the land to resettle, which is already good! The Wei family of this family, how can ordinary things be easily troubled...... But if this is the case, it should be ...... for the mother to go to her own house for a trip It should be a ...... that can be said."

Wei Renshi shook his head with a smile and said, "We don't want to return to our own family, even if we go back, we will still be out." It's better for us to live a good life in Changgu by ourselves. In my opinion, it would be nice to get some money in exchange. Auntie, if there is nothing else to do, the child will go to draw the pattern. After drawing the pattern, the craftsman will follow suit. ”

Mrs. Tai opened her mouth, but said nothing. Finally, he nodded and let Wei Renshi leave there.

Wei Renshi went back to the study, spread out the paper, and immediately started to put pen to paper.

Bi Lan of the Eastern Han Dynasty overturned, and Ma Jun of the Three Kingdoms perfected it. It was already used for irrigation at the time of Cao Wei, and its structure was exquisite, and it could continuously lift water, and the efficiency was greatly improved. This kind of rollover is also more labor-saving, and children can turn it, which plays an important role in the development of agricultural production.

Later, there were water-powered overturns, which were for progress.

In the Sui and Tang dynasties, there were cylinder cars, which increased the amount of water compared to overturned cars, which was more convenient for water diversion and irrigation.

In the late Tang Dynasty, there was a high-drum car, Wei Renshi thought about it, and now I am afraid it has appeared. However, it is more dependent on the speed of the water flow and requires animal power, and is a device in the nature of a transport chain - but it can be used as a prototype of a conveyor belt.

After the Song Dynasty, there was an upgraded and improved version of the water turn overturn - the Song Dynasty water turn rollover. This kind of dump is linked by several gears, which greatly improves the energy conversion efficiency of the water-to-dump truck, which can not only divert water for irrigation, but also provide power for other purposes such as rice production.

Compared with the high drum car, the water rotary overturning car in the Song Dynasty used the water flow to push the gears, liberating manpower and animal power, so that manpower and animal power could be used for other production activities. The linkage of several sets of gears is also used to improve the amount of water lifted. Because it uses water power, it can be used day and night. Its disadvantage is that once the water potential is too strong, it is easy to break the keel plate and be unusable, which is not as good as the cylinder car. Therefore, later these kinds of waterwheels existed at the same time, and various places were selected according to local conditions and according to local conditions.

However, the water flow of the Daoyuan River is extremely gentle, which is just right for this kind of Song Dynasty water turning and overturning.

The key to the Song Dynasty's water rotation and overturning lies in the linkage of gears.

First, dig a deep and narrow ditch on the bank of the flowing water and set up the waterwheel in it.

Then extend the tread axle of the rollover to make a vertical wheel.

Next to the vertical wheel, another wooden stake is planted as a shaft, and two horizontal wheels are made on this shaft. The upper horizontal wheel and the vertical ramus are occlusive.

The water flow rushes the lower horizontal wheel, and the lower wheel moves, driving the upper horizontal wheel. The vertical wheel of the upper horizontal wheel and the vertical wheel of the upper horizontal wheel width can be used to drive the overturned car placed in the ditch on the side by using the principle of gear linkage, and the water is continuously sent to the shore canal.

Here you can build an elevated frame at the end of the keel plate, slightly above the back slope. From here, a bamboo tube is built as a canal, which extends to the mound on the back slope. The water is carried up by the keel plates, flows into the canal, and along the canal into the storage pond on the back slope. Then it flows down the bamboo pipe from the pond and pours into the field.