Chapter 616 Lanzhou Waterwheel

Di Renjie and Qiu Tingxuan naturally listened to him, and followed him towards the Daliang River, and when they arrived at the Daliang River, the sky was already dark. The three of them lit torches and walked slowly along the river.

Wang Ping'an said: "The embankment is high, and the water level is not high, it is indeed a little difficult for the people to get water, and in this case, it takes a lot of effort to repair the canal, and the depth of the canal is higher than the bottom of the river, so that the water can be diverted for irrigation." ”

Qiu Tingxuan thought for a while and said, "It's certain that the water will flow to a low place, but if you want the water to flow to a high place, it's not impossible." The gardens of many large families in Chang'an are lifted by overturning cars, and the water flows down from the rockery from low to high, like a waterfall. No disease, in fact, there is this in your house, don't you see? ”

Di Renjie also said: "Yes, big brother, there is this kind of fake waterfall in the new house that Hamiti sent you, but the weather was still cold at the time, and the overturned car was not used." ”

Wang Ping'an was stunned for a moment and said, "You all saw it?" Why didn't I see it, what does that rollover look like? ”

Although he moved to a new house, he was too busy to take a good look at his garden, he went to the flower hall, and vaguely remembered that there seemed to be a rockery in the garden, and the rockery was extremely high, and there was a pool below, but there was no pool water flowing at that time, so he didn't pay attention. In fact, even if the water in the pond flowed and a small waterfall formed from the rockery, he would not take it seriously. It is not uncommon to see much more in modern times, but in the Tang Dynasty, if anyone has this kind of equipment, others will pay attention, after all, it is very interesting to let the pool water flow backwards, not every household can do it.

The three of them came to the edge of the wooden bridge again, dismounted together, and got on the wooden bridge, and the river below was so dark that they couldn't see anything clearly, they just stood on the bridge and talked.

Wang Ping'an said: "What does that overturned car look like, you tell me to hear it, I really didn't pay attention to it at the time." ”

Di Renjie said: "The appearance of the overturned car is very strange, I heard that there was it in the Eastern Han Dynasty, and later it was transformed by Ma Jun in the Three Kingdoms, and it became what it is now, it seems to be the design of Zhuge Liang!" He roughly said the appearance and structure of the overturned car, he can't build a rollover car, he can only say a rough appearance, as for the principle, it's not very clear.

Qiu Tingxuan added on the side, the two of you and I finally explained what it means to overturn.

Wang Ping'an only listened to the beginning, and he knew what the overturned car was, which was actually a keel waterwheel. When he was traveling before, he had seen some big families in the water towns in the south of the Yangtze River, and they had this kind of equipment at home, but they were all model props, the kind of simulation, and he had stepped on it, and he almost stepped on it and fell down, so he remembered it deeply.

After listening, he said: "Zhuge Liang didn't invent a wooden ox and a flowing horse, it turns out that he also invented a rollover!" ”

Qiu Tingxuan shook his head and said: "It may not be that he invented it, but the current overturning car was improved by Ma Jun, which is certain." The overturned car in the garden allows children to step on it, and the water can be easily lifted. ”

Wang Ping'an hummed and said, "As soon as you say that, I remember." He looked at the river below, but said, "But it is not possible to lift water from such a deep river, but it is not possible to overturn the car." By the way, I call the overturned car a keel waterwheel, and you will call it that in the future! ”

Di Renjie and Qiu Tingxuan said in unison: "Keel waterwheel? It's a good name, doesn't that overturn look like a keel! ”

Wang Ping'an said: "The keel waterwheel is used in the plains of the south, and it is not difficult to lift water from the river, but if it is used here, I am afraid that the strength will not be enough!" The water of this Daliang River is deep and the bank is high, and it is not easy to use the keel waterwheel to lift the water up. ”

Di Renjie and Qiu Tingxuan thought about it, this is indeed the case, if you want to use the keel waterwheel to lift water, how many people will have to step on the car, just stepping on the waterwheel, how can there be effort to take care of the fields, and it is not enough to spend manpower!

Di Renjie said: "What the eldest brother means, the younger brother understands." The keel waterwheel is suitable for intensive cultivation and not very suitable for large-scale irrigation. If we want to solve the problem of irrigation in the whole of Gyeongju, we have to think of another way! ”

Qiu Tingxuan said: "Although the keel waterwheel costs a lot, it is finally a way to solve the irrigation problem, which is better than nothing!" Why don't you give it a try first, but it really doesn't work, and then think of another way? ”

Wang Ping'an looked at the water on the wooden bridge, thought for a long time, and said: "I have an idea, if we improve the keel waterwheel, make it bigger, do not use manpower and animal power, only use the flow of river water as the force, build a tall waterwheel, a car can water hundreds of acres of fields, wouldn't it be good?" ”

Di Renjie and Qiu Tingxuan shook their heads together, and said: "Impossible, what kind of waterwheel can water hundreds of acres of fields, I am afraid that more than ten acres will reach the end of the sky!" ”

Wang Ping'an smiled and said: "There is only what you can't think of, there is nothing that you can't do, maybe there is really such a waterwheel!" ”

Of course, the people of the Tang Dynasty would not know what he was talking about what the waterwheel looked like, because that waterwheel only appeared in the Ming Dynasty and was called the Lanzhou waterwheel.

Lanzhou waterwheel is like a huge wheel, can rotate day and night to carry water non-stop, and does not need manpower and animal power, as long as the river water flows, the utilization efficiency of each waterwheel is great, there is no problem with watering hundreds of acres of land, even if it is a smaller Lanzhou waterwheel, it can be watered at least two or three hundred acres. It's not just talking, it's really being able to water so many fields, and history has proven it.

Di Renjie said in surprise: "In which book did you read the eldest brother?" If there really is such a waterwheel, which can water so many fields, then build dozens or hundreds of them, and then repair the canal or something, Gyeongju alone can be comparable to Guanzhong, and the people will be rich, and there will be no worries about escaping the famine. ”

Qiu Tingxuan was also surprised, and said: "No disease, you have never said those ethereal things, since you said that you can improve that kind of waterwheel, you must have a spectrum in your heart, right?" ”

Wang Ping'an thought for a while, then shook his head and said: "I just came up with the principle, but I can't think of the details, and I have to think of a craftsman who specializes in building waterwheels." Tomorrow I will send someone to Chang'an and ask Hamiti and them to recruit some skilled craftsmen to come and study the manufacture of the big waterwheel together. ”

Di Renjie and Qiu Tingxuan laughed at the same time: "If you can really build that kind of big waterwheel, but it is a good deal with a lot of profits, my Tang Dynasty has thousands of miles of territory and countless people, if this kind of waterwheel is used everywhere, Hamiti will not be able to make money!" ”

The three of them talked and laughed, got off the wooden bridge, and then walked in the direction of the Xiaoliang River in the moonlight.

The Xiaoliang River is not far from the Daeyang River and is a tributary of the same large river, but the large river does not flow through Gyeongju. The three of them walked for a short time, then they arrived at the bank of the Xiaoliang River, looked through the moonlight, and found that the Xiaoliang River was narrower than the Daliang River, but the flow rate of the river was faster, and the river bent and meandered, from the perspective of use value, it was far greater than the Daliang River.

The three of them dismounted and walked to the river. Qiu Tingxuan said: "This Xiaoliang River has a big bend, it stands to reason that there are bends and curves, and the water flow should be slow, why is the water flow here faster than the Daliang River of the straight river?" ”

Di Renjie knows a little bit more about geography than him, and said: "Bending does not necessarily reduce the speed of the water flow, if there is a blister at the bend, such as a small lake or something, then the upstream into the lake and the downstream out of the lake, the water speed may slow down." Big brother, you said yes, right? He didn't eat very accurately, so he asked Wang Ping'an.

Wang Ping'an thought to himself: "Okay, Di Ge Lao is Di Ge Lao, a generation of famous ministers really have some ability, and they actually know the knowledge of the reservoir." He said: "I don't know too specifically, but when it comes to blisters, we can think of a small lake or something as a big pond that stores water when the water is sufficient, and releases water during the dry season, which can be dug out manually." ”

Di Renjie was slightly stunned, then overjoyed, and said: "Big brother, this is a good idea, if there is such a big pond that stores water, what kind of drought are you afraid of?" If the pool is bigger and can hold more water, you won't even be afraid of floods! ”

Qiu Tingxuan poured cold water and said: "That's a big project, it is estimated that even if the people of Gyeongju dig a pit together, there is no one for three years and five years, don't want to dig that kind of big pool!" ”

Wang Ping'an said with a smile: "If you just rely on manpower to dig, and you will be able to dig with a hoe and shovel, let alone three or five years, ten or eight years will be enough!" Okay, don't be too ambitious, let's still think about building some waterwheels, repairing ditches, the drought is just around the corner, the fire burns the eyebrows, and take care of the present! ”

I walked about two miles along the Xiaoliang River, encountered a stone bridge, and three people crossed the bridge on horseback, looking for a village to stay. Not far from the river, but only half a mile away, there is a small village, more than a dozen families, there are no lights in the village, it is estimated that the villagers have already slept.

As soon as the three of them approached the village, the dogs in the village barked, one dog barked, and then five or six more barked, and in a matter of moments, the sound of barking resounded throughout the village.

Wang Ping'an said with a smile: "My God, this village is not big, but how can you raise so many dogs, can they afford it, it seems that it is good to be close to the river, at least richer!" ”

Di Renjie said: "Why only listen to the barking of dogs, but no one comes out, could it be that the people in the village have fled to the desert, so the village is occupied by wild dogs?" ”

The three of them rode into the village, but they didn't see any dogs pounce out to block the way, it seemed that they were all domestic dogs, not wild dogs running around. When he came to a house that looked quite neat, Di Renjie got off the horse and shouted through the chaimen: "Fellow, fellow, is anyone there?" We are passing guests and want to spend the night here, leave at dawn, and pay more for the room. ”

There were voices in the room, and one of them pushed open the window and asked, "Who?" Where are the guests coming from, and how many are there? ”

Di Renjie said: "From Chang'an, three people, and three horses. Excuse me, fellow, why don't you come out and open the door for us?" ”

The man did not come out, but said, "Open the door and come in by yourself, my house has a lot of vacant rooms, you can find a place to live by yourself, and I will not go down to the ground." ”

The three of them were stunned at the same time, they were all curious, could this person be a lazy man? Why does a guest come to his door and want to enter his house, and he doesn't even want to get out of bed?

Di Renjie smiled: "Fellow, aren't you afraid that we will steal your things?" ”

The man said impatiently, "Whatever you want, if you can dig up anything, remember to keep half of it for me, and you can take the rest." Also, if you have room money to give, just put it on the windowsill, and be quiet when you leave tomorrow, so as not to make me sleep! ”

After saying that, he slammed the window shut!