Yuquan Mountain is located five or six miles west of the Summer Palace. This Yuquan Mountain, which is connected by six peaks and winds north and south, is a branch of the eastern foot of the West Mountain. Its most prominent part is that "the soil pattern is hidden, with blue dragon scales, sand marks and rock gaps, and springs everywhere.

Because the spring water here is "clear and green, clear and clean like jade", it is called "Yuquan". Wang Ying in the early Ming Dynasty described it as "The spring at the foot of the mountain is like a jade rainbow, and it is clear and cool and does not share the same as the springs." This mountain is also called "Yuquan Mountain".

The mountain is named after the spring. The spring water gushs from the rock gaps between the mountains, and the water rolls up the silver flowers, just like a jade rainbow. Before the Ming Dynasty, there was a saying that "the jade spring droops with rainbows" and was listed as one of the eight scenic spots in Yanjing. The water quality of this spring is drawn from the water samples of major famous springs in the country, and compared with the water of Yuquan. The weight results show that the quality of silver-made small dots is more than one tael of 100% and the quality of each dot is only one tael of 1000%. The water is light and high in quality, pure and sweet.

However, Yuquan Mountain was long ago named the Imperial Garden. Except for the square tower on the mountain and a circle of tall walls surrounding the entire mountain, no one knows what other people on the mountain. Even many years have passed, no one can go up and take a look.

There is the source of the royal water dragon, which has always been listed as a royal taboo. Xizhimen is also known as the water gate, and the dedicated water truck enters the city from Xizhimen. Every morning, as soon as Xizhimen opens, the first batch of palace water trucks entering the city were inserted into the royal dragon flag and covered with large embroidered dragon tarpaulin.

If a canal canal canal can be built directly to direct the water from Yuquan Mountain to the palace, wouldn’t it solve the problem of water transport?

Of course, if we now lay a few pipes and bringing tap water to our home is a very simple thing.

The problem is that this is the Ming Dynasty. In this era of backward technology and equipment, how to build a canal and lead the water from Yuquan Mountain to the capital is a big problem.

Moreover, the distance from Yuquan Mountain to the Forbidden City is not close. In an era without pipelines and water pumps, it is almost impossible to accomplish such a feat.

But Zhu Cilang is on such a whim, he just wants to give it a try.

Xiao Shishi also looked at him in confusion: "This, how is this possible? How can this be laid in such a distance?"

Zhu Cixuan thought for a while: "Let's go out of the palace with me tomorrow. Maybe we have a solution."

There is really, but Zhu Cilang is not sure whether it can be done or not. First of all, building cement pipelines is not difficult.

Although chemical cement cannot be made in this era, at least three-corrosion soil, or making some ordinary cement is not difficult.

For example, to obtain hydraulic lime, limestone containing clay must be used to fire; masonry mortar used in underwater construction is the ideal component of hydraulic lime and volcanic ash.

In the 8th century BC, some forms of cement were used by people. The Egyptians built pyramids with lime mortar, while the Romans built the Roman amphitheater with hydrocarbon cement and the same famous temple of the gods and ancient stone paths.

.In the Southern and Northern Dynasties, building materials for glutinous rice and lime mortar were invented. The strength was much greater than that of pure lime mortar and very strong. For example, during the Ming Dynasty, many buildings had brick walls made of glutinous rice and lime mortar, and they stood firm after a hundred years.

It is actually a very simple thing to burn ordinary cement. First of all, the problem of raw materials can be solved easily. For example, in simple cement ratios, limestone, clay, and iron slag.

Lime ore is everywhere, and clay is even more visible everywhere. Iron slag, that is, blast furnace slag, is not much of it, has no place to put it.

Due to years of war and the improvement of firearms in the Ming army, the iron smelting industry has emerged unprecedentedly, and a large amount of slag has accumulated like mountains. These things are the best raw materials for making cement.

Grind the limestone and clay into the surface, then calcined into the clay material and then ground it into powder with the remaining slag after iron smelting. These are cement.

In ancient times, mature lime firing technology had been available, without any technical barriers. Glass, cement, and steel all needed to be higher than the furnace temperature of that era, and the temperature could only be increased by increasing oxygen to help combustion and replacing fuel.

Oxygen fuels combustion, which means blowing the air into the stove. In ancient times, airbags were used to blow the air, and later water drainage was invented. It was not until the emergence of the new wooden bellows in the Ming Dynasty that it reached its peak. Therefore, to boil cement, inventing the bellows is the key.

Fuel: In ancient times, charcoal was used as fuel, and the furnace temperature could reach 1300 degrees Celsius, while coal could reach 1800 degrees Celsius.

These are not difficult things. Xishan’s glass factory has long been at its peak. Even glass can be made, and small bellows and fuel problems can naturally be solved.

As for the rest, there seems to be nothing left. Of course, the pipe made of cement cannot be used directly, and steel bars must be added to it.

A military battle situation where flintlock rifles can be mass-produced, steel bars are not a problem at all.

Of course, the steel bars made in this era obviously do not have modern strength. However, it is enough to be used for cement reinforcement.

In ancient times, bricks were used as blue bricks, which were durable but had high production costs. Red bricks had already appeared in kiln factories in Xishan. Although the quality was not as good as blue bricks, it was sufficiently used with cement, and it was cheap and fast.

The only disadvantage is that cement is alkaline. Such alkaline cement will obviously affect the quality of drinking water. Even after a large amount of rinsing, the taste of the spring water brought from Yuquan Mountain will inevitably be affected.

This depends on the contribution of Xishan Glass Factory. Xishan Glass Factory has completely stopped production and has turned to producing glass pipes, using glass pipes as special tap water pipes.

But the glass is fragile, so a layer of cement is reinforced outside the glass water pipe. It can also cure and keep heat insulating. Although the tap water pipes made in this way are expensive, it is already the best way that Zhu Cixuan can think of.

In addition, the biggest disadvantage is power. It would be fine if the terrain of Yuquan Mountain is higher than that of the palace. I am afraid that the tap water pipes may not be able to be led to the palace through the terrain.

So it is necessary to go to the investigation, Zhu Cixuan decided to take Xiao Shishi out of the palace tomorrow to Yuquan Mountain. First, to examine the feasibility of this project, and second, it can be considered as a way to relax and breathe.

Xiao Shishi was very happy. Everything in this palace is good, but she is a little bored. It is far less exciting than the outside world. Being able to travel and play is naturally a good thing.

If there is really no way to attract water sources, such as water diversion power such as water pumps, Zhu Cixuan can only make some windmills along the way as water diversion power. Otherwise, pulling water from Yuquan Mountain every day will actually consume a lot of money.
Chapter completed!