Early the next morning, Chen Xu accompanied Shui Gently into the city again.

Shui Qingrou went to the palace to invite the fifth princess to play outside the city, while Chen Xu went to work at the Academy of Sciences.

I haven't been here for almost ten days, the Academy of Sciences looks like everything is the same, all departments are still the same ghost, there are people who read books, read newspapers, play chess and drink tea, most of them are idle, but there are still a few departments that are more lively, especially in the conference room, there are many craftsmen and craftsmen, who are listening to Zhang Cang's lecture on mathematics.

In the past, Zhang Cang specialized in compiling nine chapters of arithmetic and was not very involved in the affairs of the Academy of Sciences, but after the compilation of the mathematical monograph was completed some time ago, and after Chen Xu's theory and practice were combined to build the tap water system of the Qinghe Courtyard, the Academy of Sciences has recently become very interested in tap water, especially the two things of the water tower and the faucet.

When you turn on the faucet, water flows out, and such a heart-wrenching idea was actually thought up by Hou Ye, and it was successfully made, and everyone was still a participant and maker, which made many people have a dream-like feeling.

These days, under the leadership of Zhang Cang, the Academy of Sciences has brought together craftsmen and craftsmen who have participated in the installation and design of tap water to formulate a set of standardized construction plans for tap water systems, and have formulated very strict standards from the height and size of water towers, the thickness of water pipes, drainage measures, the style of faucets and the thickness of interfaces.

The installation and design of the tap water system also made many craftsmen feel that their mathematical knowledge was insufficient, so Zhang Cang gave full play to his mathematical strengths, and recently gave these people a mathematics lesson every day.

Seeing that Hou Ye, who had not come for a long time, actually came to work, Zhao Qing, the director of the Academy of Sciences, and all the helpers came to salute Chen Xu, and Chen Xu also greeted him all the way to the outside of the conference room, standing outside the back door and listening to Zhang Cang finish a class.

"Meet Master Hou!"

"Master Hou is here!"

After the class, a group of craftsmen and craftsmen and Zhang Cang who were listening to the class all came over to salute Chen Xu.

"Hehe, it seems that everyone is very positive, this is a good thing, as the saying goes, when the book is used, it is necessary to study mathematics well, Dean Zhang has worked hard!" Chen Xu greeted a group of people with a smile.

"Master Hou, we all want to install tap water in the Academy of Sciences, what do you think?" After the greeting, he couldn't wait to ask.

"Naturally, I can help solve the materials, but you have to renovate the design yourself, and the water source is also a problem, the Academy of Sciences has no canal, only a well, and it is still ......on the street outside the door."

"Alas~" Chen Xu said this, and many people suddenly shook their heads with sad faces.

The most important and core part of tap water is the water source and the water tower, which can be easily repaired with steel and cement, but there is no solution if the water source does not solve the problem.

Although Xianyang City is close to the Wei River, there are only two canals in the city, one leads to the palace, to solve the problem of drinking water in the palace, the management is very strict, there is the Inner History Mansion and the Shaofu every day to arrange the forbidden army to inspect, and there is a canal leading to the small lake in the Zongshan Courtyard, the common people can not use it, so the daily drinking water of millions of people in the city mainly depends on the well, or it is to go out of the city to carry water, almost all the big families in the city have dug wells, otherwise just carry water will have to exhaust half of the servants, but even so, Guarding a big river that flows in waves for a long time, Xianyang people still feel that there is a shortage of water, mainly because it is too inconvenient to get water.

Looking at the depressed sigh of a group of people, Chen Xu waved his hand and said: "You are all the most powerful craftsmen in my Daqin, and the purpose of my preparation for the Academy of Sciences is to hope that everyone will give full play to their strengths to produce various items that can solve the practical problems of people's lives, Xianyang is not short of water now, but if you want to let the water outside the river flow to every household through the pipeline, this is a very huge project, I hope you can think about it, how to lead the river water to Xianyang City, even if it is a canal, If the city could build several criss-crossing canals, the river would flow into the city every day, and the residents of the city would be able to easily get water for drinking, laundry and cooking, and many people would not have to carry water from outside the city every day! ”

"Could it be like the canal in the Hou Ye's courtyard?" Zhang Cang's eyes lit up.

"It's about the same, but if you want to meet the water supply of the entire Xianyang City, it is not built like this, you need to find a narrow terrain and a large drop dozens of miles away to build a dam to cut off the river to form a reservoir, and then through the ditch or water pipe to draw the water from the reservoir to Xianyang, if the drop reaches the height of the water tower, you can also install tap water ...... every household."

"Cut off the Wei River?" Chen Xu's words frightened everyone, and they looked at Chen Xu like a terrifying monster.

"Hehe, is it hard? Now there is steel, there is cement, as long as a levee is built in the right place, but ...... Well...... It is indeed not difficult, but it is not impossible to complete, but we do not have such a strong industrial capacity and construction experience, and to supply water to Xianyang, it is not necessary to cut off the Wei River, but you can consider for example, the Jing River or even a tributary of the Jing River, find a narrow river channel and build a dam on both sides of the higher ground to block the river, and then a large lake will be formed......"

"Hou Ye's policy must be effective, the water canal leading to the palace is from a small river in the northwest outside the city through a ditch into the city, in order not to let the cold winter water run out of water available, there is also a dam to block, but the amount of water can not meet the water demand of the entire Xianyang population, if Hou Ye's strategy can be completed, Xianyang City's millions of people may really be able to use tap water!"

The craftsmen of the Academy of Sciences are definitely first-class craftsmen in Xianyang and even the whole Daqin, and there are many who are proficient in water conservancy, and Daqin originally attached great importance to agricultural development, and the canals built in the hands of Qin Shihuang alone did not know how much, the most famous is the Zhengguo Canal, the White Canal, and the Ling Canal in history, and earlier there was a more awesome Dujiangyan irrigation water conservancy project, Li Bing and his son took advantage of the situation to irrigate most of the Chengdu Plain with the water of the Minjiang River, tamed the flood and built Shu into a huge granary, Whether it is Zhengguo Canal or Ling Canal or Dujiangyan, it is still in use after more than 2,000 years, and earlier there are 12 canals of Zhangshui built by Ximen Leopard to irrigate a large number of farmland in Henan, making Nanyang a highly developed area of agriculture, that is to say, during the Spring and Autumn Period and the Warring States Period, China has formed a very mature system and practical theory for the use of water conservancy in agriculture.

After Chen Xu finished speaking, a large group of craftsmen and craftsmen who were familiar with water conservancy began to discuss the feasibility of Chen Xu's proposal, and finally nodded that Hou Ye's idea could be put into practice, and they all asked to be in charge of designing this water project that will inevitably go down in history.

"Okay, okay, there's no rush in this matter right now, I have another more important task entrusted to you today!" Chen Xu walked to the podium of the conference room, and Zhang Cang and a group of craftsmen and craftsmen also hurriedly found a place to do a good job.

As soon as the people from other departments of the Academy of Sciences heard that Hou Ye was going to give a lecture, they all flocked to it, and soon the entire conference room was full, and many people could only stand in the back or outside the door.

Seeing that everyone looked serious and serious like the primary school students of later generations, Chen Xu felt a sense of satisfaction, sorted out his thoughts and said: "Our Academy of Sciences has been preparing for eight months, and many useful things have been studied in cooperation with the pilot plant outside the city, such as steel, such as glass, such as cement, as well as movable type printing, etc., but these things are the basis for development. But how to apply it to practice to solve specific things is a problem that everyone should care about and think about. ”

"This time I installed the tap water system in the courtyard outside the city, and handed over this task to Dean Zhang and you, we have worked tirelessly to complete it perfectly, I thank you very much, recently we are all summarizing and improving the construction method of the tap water system, this is a very good model project of theory and practice, at least through this project, we all understand the working principle of water pressure, the characteristics of cement, the application of steel and cement and the overall arrangement of water supply and drainage, etc., and we are in the measurement, design, Engineering drawing and other aspects have also made a lot of valuable experience, therefore, this tap water system is an appetizer for everyone, but we, as the Royal Academy of Sciences, as His Majesty's most important agency, must learn to be useful, to lead the rapid development of the entire Daqin industry and agriculture, then we must look farther, step bigger, give full play to the advantages of our Academy of Sciences, apply all the newly researched things to the lives of the people of Daqin, and solve the bottleneck problem of Daqin's development......"

Chen Xu said that his eyes swept over the entire conference room, and everyone listened with a moved face, and they all grew up and their mouths were silent.

"Everyone knows the characteristics of cement, I want to ask you, what do you think of the functions of cement? What fields can it be used in? ”

"Master Hou, cement's anti-heaven effect of turning mud into stone can be applied to all fields that require mud and stone, such as houses, embankments, ditches, towers, bridges, and ground...... "A young craftsman stood up and snapped his fingers and began to answer.

"Yes, after the cement solidifies, it is as hard as hard stone, and it can be shaped into any desired shape, with bonding, hardening, waterproofing, fireproof and other ordinary wood and stone do not have all the excellent characteristics, so the emergence of cement will completely change the pattern and construction of the building, we can use cement to build a four-zhang high water tower, then it is also very easy to build a high-rise building four or five zhang high or even more than ten zhang high, if you are more bold, research out a stronger steel bar and higher strength cement, It is not impossible to build a high-rise building in the future......"

"Wow~" There was a sudden violent commotion in the classroom.

"Hou ...... Master Hou, isn't it a hundred-zhang tall building...... Didn't you rise into the clouds? One of the craftsmen closest to the podium stood up and stammered.

"Almost, it's impossible on a sunny day, but on a rainy day, you must live on the clouds, stand high and see far, and on a sunny day, it is estimated that you can see hundreds of miles away from the roof of the building......" Chen Xu nodded slightly.

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