In addition to roads, sulun began to build the territory's water supply system. It has been more than ten years since she came to the world. Sulun is still not used to the days without tap water.

Most of the urban water supply in this era depends on well water, which needs to be purchased. Having a sweet well in the city is a stable source of income. Of course, some poor people choose to carry water by the river, and the nobles prefer the nearby mountain spring water.

Because it is not easy to get water, people in this era seldom take a bath. Civilians take a bath once a month can be regarded as paying attention to hygiene. Sulun can't accept that his barbarian soldiers don't take a bath for a month.

These energetic and strong men patrol and sweep the wasteland every day. The dust and sweat on their bodies are inevitable, so Suellen forced them to take a bath every day. Of course, this requirement has been unanimously supported by those barbarian women. Now it is considered that Suellen does not supervise those barbarian women, but also their husbands.

Once he doesn't take a bath, he can only spend the night outside.

When Su Lun came to the river to investigate, he saw a group of naked men and children, plopping into the Hongsha River to take a bath.

It's not cold at this time. It's good to take a bath here. It won't snow for a while. Suellen plans to build some public bathrooms as well as water supply facilities.

Magic in this world can do many things that science and technology can't do in previous lives, but the number of wizards determines that magic is difficult to be promoted. The water supply facilities to be built by sulun are to be built in combination with the Lanzhou waterwheel in the past.

With mechanical control skills, Su Lun is very familiar with the principle and manufacturing of various machines. He is going to build three or four Lanzhou waterwheel on the Hongsha river. Firstly, the water source in the river is lifted by a water truck, and then the water is sent to the reservoir in the city through the water supply canal.

The reservoir must be built high, or the water can't flow at all. The water diversion canal outside the city uses the elevated water diversion canal of ancient Rome in the past. In order to ensure that these water diversion canals are strong and durable, sulun specially uses mud into stone to strengthen these water diversion canals.

The diversion canal has been built from the river to the outside of the city. After considering it, Su Lun decided to build the water storage outside the town. The main reason is the expansion of the town. Now the area of Zhenbei fort is not large, with a distance of 500 meters vertically and horizontally, and thousands of people are not crowded. However, with the increase of the territory's population, the current size is certainly not enough.

Therefore, sulun has planned to expand the town. This time, sulun plans to double the East, West, North and south of the town, so as to quadruple the area and upgrade the town into a large town that can accommodate 5000 people.

The length of the diversion canal from Hongshui River to the city is more than five kilometers, and because the location of the city is much higher than the river surface, these diversion canals need to be built into elevated diversion canals.

The construction of elevated diversion canal is very difficult. There is no architect in the territory who can build such a big project. Su Lun had to play a guest role in person. After all, he has been in the world for ten years and received a normal noble education, although he is only a spectator. In this world, the education of nobility is still very strict. We should learn from etiquette, geography, riding, literature, architecture, history, martial arts and so on.

At the beginning, Su Lun seriously learned all these knowledge. Although he didn't spend too much effort on architecture, he was still a little sure to build an elevated diversion canal combined with the theory of his previous life.

The width of the diversion canal is about 60 cm, the depth of the water tank is 50 cm, the diversion canal is 30 meters away from the highest position on the ground, and the diameter of the waterwheel is 35 meters. In order to build such a waterwheel, sulun personally took people to cut down the iron oak trees that have grown for hundreds of years near the LOTAS mountains.

Iron oak lives in a cold environment. The wood is hard, not easy to deform, corrosion-resistant, not easy to burn, and grows very slowly. It takes at least two or three hundred years to grow to forty or fifty meters high. The large waterwheel built with this wood is light and durable.

It took several days to cut down eight iron oak trees in the LOTAS mountains. Sulun took the team back. There were also some slaves captured here. In order to cut down these iron oak trees, sulun also took people to wipe out two jackal tribes.

In his previous life, Su Lun saw the Lanzhou waterwheel in the waterwheel park. When he saw it for the first time, he felt very shocked. The 20-30-meter-high waterwheel turned driven by the water flow and raised the water in the river to 20-30 meters without relying on steam and electricity.

The structure of this waterwheel is not very complex. According to the memory of his previous life, Su Lun combined his mechanical control skills and finally built the first Lanzhou waterwheel.

The huge waterwheel stands on the Hongsha river. The rapid water flow drives the waterwheel to rotate. The water tank on the outer ring of the waterwheel is filled in this process, and then rises to an altitude of 30 meters with the rotation of the waterwheel, and then pours into the diversion canal. As long as the waterwheel is not damaged and the Hongsha river is not cut off, the energy source will continuously transport the water source.

[water wheel: giant star water wheel made of iron oak, with ingenious and durable structure, is a very good water lifting tool, with firmness + 10, wear resistance + 10, water lifting + 10 and power + 15]

The elevated diversion canal is made of rock. Because the height should reach 30m, a deep foundation has been excavated below. The construction of the elevated canal also needs Su Lun's personal command. In this era, there are few adhesives used to bond the wall, mostly glutinous rice juice or pozzolanic cement.

Glutinous rice juice needs a lot of food. Su Lun is reluctant to waste it. Su Lun can't afford the price of pozzolanic cement transported here, so he can only work hard in person. After each section is built, he will cast the magic of turning mud into stone on these elevated diversion canals.

After the magic of turning mud into stone, these rocks will be completely integrated, and no cracks can be seen anymore, which is better than the effect of glutinous rice juice and cement. This effect is good, but it is too expensive. In kart City, hiring a wizard proficient in the magic of turning mud into stone costs at least 300 jinnars a day.

Even the nobles can't afford this price. If Su Lun has no money in the future, he can also consider acting as an architect. Each time he turns mud into stone, he can turn the ten meter long elevated canal into rock. Su Lun has to do it more than ten times a day. He has spent a lot of energy on this water supply system.

PS: Thank you for dinner. Ke Shuyou is rewarded with 1000 starting coins, Chang'e Houyi is rewarded with 200 starting coins, npc123689 Shuyou is rewarded with 100 starting coins, and ABA ABA AA Shuyou is rewarded with 100 starting coins.