During the Tang and Song dynasties, most of the culverts in the city were called Fushougou, such as the culverts in Tokyo City were also called Fushougou, which was constructed by blue bricks and horse stones, and was built around the city according to the topography and mountains, and was called Fugou in the east-west direction and Shougou in the north-south direction.

The construction of this ancient city and the design of culverts are all necessary subjects, but the main function of culverts in ancient cities is to drain the water that may appear in the city, not mainly for sewage discharge.

For example, there are only three types of filth in the city of Tokyo, one is domestic sewage, which is mostly used to water flowers and splash the ground or directly poured into the open channel and inland rivers, and the second is human and animal excrement, which is stored in the toilet or thatched latrine (dry toilet), and the peasants from outside the city regularly come to the city to collect it and take it to fertilizer fields, and even the imperial court has specially set up officials and errands for officials, and classifies this work as a public service, called "dung administration".

For some areas with poor sewage conditions and no large latrines as a transit station, the government will also set up special personnel to go to each household regularly every day to collect excrement, and the vehicles used to collect them also have a unique title, called Night Fragrance Car!

The last category is domestic garbage, but the ancients rarely had any domestic garbage, a piece of paper and a section of wood are useful, there really is any domestic garbage, and the way of treatment is just like domestic sewage, most of which are directly discarded in the Yanggou nullah or inland river.

Even on Mahang Street and Bianhe Street, there are many children with bamboo baskets and wooden shovels and bamboo chopsticks, waiting on the road to pick up the horse dung left by the passing knights, as for the ox cart, the cow dung and donkey mule dung left by the donkey and mule cart are not to think about it, the driver will use a bag to tie to the tail of the animal, the mouth of the bag is just facing the dung door, and the dung ball produced by the animal is taken home to dry and used to make a fire.

Therefore, when Huang Jie proposed that a canal water supply system should be built along the square wall, and then the clean water in the canal would be introduced into each house with a pottery pipe, and a water toilet would be built in the house, and then the feces would be directly flushed into the sewage canal, collected into the sedimentation tank through the pipeline, and then directly discharged into the culvert and directly discharged to the silting tidal flat outside the city for silting, and then regularly silted and dried to make fertilizer.

Especially what kind of water toilet, you can also squat, sit two kinds, after the gong, just pull down the mechanism to let the water wash away the filth, this is simply ...... Too whimsical, right?

But when he said that everyone was staring wide-eyed, Liang Shicheng couldn't help asking, "Is this...... Where does the water come from? ”

Huang Jie replied: "Naturally, it is a well in the city!" ”

Liang Shicheng asked again: "How...... On the wall? How to save it? ”

Huang Jie also smiled: "The waterwheel is on the wall, the water tower and the water room are stored, and the mouth of the water in the people's homes is equipped with a valve, and the valve is opened to take water, and there is no need to close the valve, not day and night, the river is endless." ”

Liang Shicheng was right when he thought about it, but he thought badly, thinking that it was the kind of way of non-stop water flowing day and night, and he was worried that it would cost a lot of manpower and material resources.

Gao Yu asked: "It's good to plan like this!" It's just that the manure is washed with water, but I am afraid that it will reduce a lot of fertility, and the fertilizer field is difficult to use! ”

Huang Jie didn't expect Gao Yu to know how to do farming, so he also said: "No! The key to fertilizer efficiency is the refractory substances in the manure, which will accumulate in the sedimentation tank after being washed by water, and will be transported naturally and regularly. The filth washed out is not discarded, but discharged into the tidal flats outside the city to create siltation, which accumulates over time and must be transferred regularly. ”

Gao Yu understood it, so he also clapped his hands and said: "In this way, it is also good!" And your plan for the public toilet is also good, but I'm afraid that the people's habits will be difficult to change for a while! ”

Huang Jie said with a smile: "The reason why people make mistakes is that they don't know their mistakes, and second, they are not afraid of punishment. ”

As soon as Huang Jie said this, but somehow, Zhao Guanjia, Liang Shicheng, Gao Yu, and the little eunuch Chundao all looked at Wang Huang together. Wang Hao naturally noticed that there was something wrong with this sentence, and while being embarrassed by everyone, he also instantly understood that Wang Cong's son should have been lying on the ground and hit by an arrow, and immediately had an idea, so he also said: "Such a wonderful plan, I am afraid that it is only in heaven, but it has never been seen in the world!" ”

His words really had an effect, everyone nodded in approval, and Zhao Guanjia's eyes moved, but he came to ask: "I don't know this kind of design, but what is the name?" ”

How could Huang Jie not know his thoughts, so he also said: "No, why don't you give a name from the official family?" I'm going to try it out in Tokyo first, and if it's good, I'll spread it all over the world, and I really need a good name! ”

When Zhao Guanjia heard this, he also pretended to mutter, and then said: "No, it's called Tianqu, how about it?" ”

Huang Jie rolled his eyes when he heard this, but Liang Shicheng and Wang Hao applauded in unison, so the name of this "Tianqu" was decided.

After that, Huang Jie said some details of road construction, but for a merry emperor like Zhao Guanjia, it was obvious that he was very lacking in engineering, so he also took the initiative to stop, but he came to ask: "I don't know, if the Qing family does this, how many craftsmen and how much money will they need?" ”

Huang Jie also smiled and said: "In terms of craftsmen, there is no need to worry, I have built a workshop in Huangzhou, called Huangzhou Construction, there are 50 craftsmen who specialize in building roads, and 500 craftsmen of the Yu nationality. As for the cost budget, now there is no accurate number, the wall is about 1,200 cents, the stone road in the city, the brick road and then count the stone ditch, pottery pipe, earthwork, and the water tower and water house supporting the canal, 100 steps are afraid of 800 cents, and the total cost is about 100000 cents! ”

When everyone heard this, first of all, this kind of construction was not counted according to the mile, but it was a little surprising according to the hundred steps, and then the length of the square wall of the hundred steps (one step is about 1.5 meters, a hundred steps is 150 meters, and three hundred steps is one mile) actually cost 1,200 yuan, that is to say, one mile will cost 3,600 yuan. As for the road and the canal, it only costs 2,400 miles, which is really cheap.

Just when everyone was smacking at the total cost of this million guan, Gao Yu smiled and said: "The old man used to build a city in Fandi, and the cost of a mile of city wall was almost 30,000 or 40,000 yuan, so the price is really cheap." ”

Who knows that Huang Jie said: "Cheap is cheap, but in order to calculate the money needed for relocation, this transformation is afraid that thousands of people will be relocated, and the relocation cost is not small." ”

Huang Jie said this, everyone is also heartbroken, although this Tokyo is the national capital, but the land is also private by the people, it is easy not to be grabbed, and Huang Jie just said that the relocation plan is to first find vacant land to build a house, and then move out of the people who need to move, and after the transformation is completed, they will move back, and for some people who rely on their own houses to make a living, they also need to pay for money and food with them in an appropriate amount, so that they will not accumulate grievances.

Zhao Guanjia thought about it, suddenly rolled his eyes, and said: "I know that you have some means, it is better to allow you 500,000 yuan, you just have to do it, how about it?" (To be continued.) )