At present, the largest scale of the workshop is the lime kiln, brick kiln and the coal (coal) field developed thirteen or four miles away from the back mountain and the depths of Baohua Mountain.

In the same way, the military government only needs to take out 1,200 stone japonica rice every month, and can exchange 200,000 large and small green bricks, 2,000 quintals of lime, and 600 carts of charcoal from the workshop.

However, there is still a lot that can be improved in the workshop.

Han Qian didn't do it before, mainly because he didn't have so much energy to take care of this side, especially during the four months when he left Jinling, he could only ask Fan Dahei to lead the engineers in the field first and build up the scale first.

Today, the third prince Yang Yuanpu came over, and Han Qian took him to visit the workshop while teaching him the science of things, talking eloquently all the way, seemingly completely unaffected by yesterday's events.

The word Gewu comes from the first of the four books of Confucianism, "University", which begins with a clear meaning: "Those who want to be virtuous in the world in ancient times, first govern their country, those who want to govern their country, first gather their families, those who want to gather their families, first cultivate their bodies, those who want to cultivate their bodies, first correct their hearts, those who want to correct their hearts, those who want to be sincere in their intentions, those who want to be sincere in their intentions, first to their knowledge, to the ...... of Gewu"

As far as Confucianism is concerned, it is pointed out from the beginning that "Gewu" is the most basic prerequisite for enlightenment, self-cultivation, and Qi family.

However, for thousands of years, Confucian scholars have interpreted the term "Gewu" and focused on exhaustive reasoning, coupled with the attack on craftsmanship and practitioners since the pre-Qin period and the contempt for sociality, which led to the evolution of Gewu's science into metaphysics and psychology, but not really based on the fundamental interpretation of "distinguishing the nature of things" and "cognition of objective laws", so that no systematic science has really developed after a thousand years.

This is also the biggest insight that Han Qian has gained from integrating Zhai Xinping and dream knowledge for more than a year.

If we want to distinguish the physical properties and recognize the objective laws, a more important premise is that everything must be practiced.

Dealing with the heavy and tedious affairs of the workshop is actually a process of sorting out and integrating dream knowledge for Han Qian.

This knowledge, even if Han Qian only taught him the most basic knowledge of Gewu, as well as everything in the workshop, still had a great attraction to Yang Yuanpu.

Chai Jian, Li Chong and other accompanying personnel listened to each other, and they didn't know where Han Qian came from, or that these words had ulterior motives.

Although since the late period of the previous dynasty, the feudal towns have been divided, the martial arts have been in power, the imperial examination has actually been abolished, and the status of Confucianism has not been demonstrated.

Although Chai Jian, Li Chong and others are martial artists, they have also studied diligently since childhood, and it can be said that they are deeply influenced by traditional Confucianism, and even if Chen De is a pure martial artist, he also feels that what Han Qian talks about is very different from what he usually hears.

Of course, Chen De, Chai Jian, and Li Chong may not agree with Han Qian's views, but with their academic background, they are far from enough to stand up and refute Han Qian, and they are also shocked by Han Qian's mixed knowledge and breadth.

However, what made Chai Jian and Li Chong even more unbearable was that in the workshop, which engineer and craftsman was a little better, Han Qian called the third prince Yang Yuanpu to introduce it, and they personally explained the craftsmanship to the three princes, they guessed that Han Qian was using the three princes to weaken the prestige of the military officials in the eyes of the craftsmen, but the three princes were approachable, and they were helpless.

And the three princes commensurate Han Qian with a "Han teacher", and Chai Jian and Li Chong are even more helpless.

After visiting the workshop, he had a simple lunch in the workshop, and in the afternoon, Han Qian led the three princes, who were full of interest and did not feel hard, to inspect the coal yard deep in the back mountain.

Seeing that from the coal yard, along a stream and further north, a large number of stones were piled up at the mouth of the stream, and hundreds of sturdy men in ragged clothes were digging a deep ditch on the side of the mouth of the stream, Yang Yuanpu asked Han Qian curiously: "Master Han, what are you doing here with great fanfare?" ”

"Build a stone dam to store water!" Han Qian said, "This is also the first thing I will do when I return to the villa, and I have already instructed the craftsmen to prepare for a long time. ”

Going down from the coal yard, the stream on the west side is connected with the stream that flows through the Qiuhu Mountain Courtyard, and then at the location of the craftsman's workshop, due to the gentle terrain, the river channel is further opened, forming the Taoxi River more than 20 steps wide, bypassing the military government Tucheng, and then flowing into the Chishan Lake.

Han Qian planned to build a stone dam at the mouth of the creek northwest of the coal yard, thinking that the water level of the stream in the north would be raised by three to four meters, so that the mouth of the stream could be extended north to a valley five or six miles deep in Baohua Mountain, and it could be turned into a small mountain lake reservoir.

On the one hand, more grain fields can be reclaimed on the periphery of the reservoir for irrigation, and on the other hand, and at the same time, the main reason is that at the edge of the coal yard below the mouth of the stream, two crushed coal water mills have been built and put into use, which requires a stable flow of water.

Limited by mining technology, the coal excavated from the mining tunnels in the world is relatively large, if it is directly used for brick making, lime burning, the combustion is slow and insufficient, which is also a key bottleneck that the cost of the current brick kiln and lime kiln can not continue to decline, and the production capacity cannot be further improved.

However, in fact, the brick kiln and lime kiln do not need to be expanded, but only the initial crushing of the coal block and the removal of the coal gangue with low coal content can improve the efficiency by half.

Han Qian only sent back to Jinling the diagram of the connecting machine left by the general Du Pre six or seven hundred years ago through the guidance of letters, and asked the workshop to imitate the two connected machine water mills, which are also a simple version of the hydraulic coal crusher, although it has only been put into trial for half a month, but the effect of use is quite good.

The problem is that without the construction of a reservoir to artificially control the flow of water, not only in the dry season of autumn and winter, the existing two hydraulic coal crushing mills are difficult to operate, but also in the summer and autumn when the rain is abundant, the water flow is rapid and slow, and the operation of the two hydraulic coal crushing mills is also difficult to stabilize.

If you want to establish a relatively perfect production system, relying on the sky to eat, in fact, is the least efficient.

At present, only the construction of reservoirs in the upstream can ensure that more hydraulic equipment is built and used in the downstream, and there can be a stable flow of water; It is necessary to ensure that the coal produced in the coal yard can be transported out of the mountain by shallow-bottomed boats in autumn and winter, and it is also necessary to ensure that the water flow is not exhausted.

Before Han Qian went to Xuzhou, he arranged for a workshop to mine the stone needed for dam construction.

Before Han Qian returned to Jinling, Fan Dahei had already arranged for people to dig an aqueduct on the west side of Xikou.

Fan Dahei was kicked out of Jinling by Han Qian, but many things were still advancing in an orderly manner, and under Han Qian's personal interrogation, he was not delayed.

After two days of digging the aqueduct, you can build a mud embankment upstream of the mouth of the stream, block the stream water into the diversion canal and flow downstream, and the water retaining stone dam can be officially built at the mouth of the stream.

"There are many heavy rains in Jianghuai, mountain floods, and surging water, how strong does this stone dam have to be built to be as stable as a mountain?" Yang Yuanpu asked with some concern.

"Your Highness, you see that these stones have notches - when the dam is built, we will pour molten iron into the notch to make the stone dam integrate...... Han Qian explained briefly, and there is no need to explain the more complex calculations to Yang Yuanpu in detail.

"How much food does this cost?" Yang Yuanpu asked, he was still concerned about this issue.

"Fortunately, the mouth of the stream is dug two or three zhang into the rock formation, and the stone dam only needs to be built thirty steps long to seal the stream, which is not as arduous as imagined, and the workshop can barely do ......it," Han Qian said indifferently.

Although Han Qian didn't care at all, Chai Jian and Li Chong secretly smacked their tongues.

Although the bulk of the consumption of the cantonment camp military government is not in the Zuo Division, the use of the Zuo Division is far beyond their imagination, even if they don't count the new manpower added by the Zuo Division this time, they don't know how Han Qian survived before.

Regarding the construction of the stone dam, Han Qian explained to Yang Yuanpu a lot of things about the construction of flood channels, diversion canals, pitangs, terraces, as well as hydraulic equipment such as water mills, water mills, water drains, and machine mills, which had been invented hundreds or even thousands of years ago.

As for the theoretically achievable water-powered spinning machines, water-powered looms and water-powered forging hammers, Han Qian will not talk about it, at least in front of Chai Jian, Li Chong and others.

The military palace is located at the southern foot of Baohua Mountain, stretching for nearly 20 miles, the relatively flat reclaimable fields between the mountains and lakes are limited, but there are many streams and rivers that can be used in the mountains, and the drop is enough, which can be described as abundant water resources.

Han Qian suggested that the third prince, Yang Yuanpu, should take over more affairs for the military government from Taifu Temple, the Ministry of Internal Service and even the Ministry of Industry, which would be enough to feed tens of thousands of people and reduce the pressure on the money and food of the military government.

For example, the official rice issued by the DPRK and the central government is the japonica rice refined grain after the husking of rice and millet and other grains, and the husking is done with a stick in the early years, and then with a stone mill and a stepping mill, and although the water mill and even the machine mill have come out as early as seven or eight hundred years ago, there is no high drop in the river in Jinling City, and it is mainly used by officials and slaves and maids, or by animal power to scoop grain and mill rice.

Although the cost of using officials, slaves and maids is also very low, the problem is that even if you use officials, slaves and maids, you have to give them food and drink to maintain their strength for slavery, and the cost of controlling thousands of officials, slaves and maids is also extremely huge.

If Cao Cao, a military worker, can use the streams and rivers at the southern foot of Baohua Mountain to make water mills, connecting machines and other things, as long as the cost of rice can be lower than that of officials, slaves, and maids, the three princes can contract it over, and His Majesty will not allow it.

Chai Jian and Li Chongneng realized that Han Qian was talking about these things in front of the three princes, and he was still looking for a block for Gongcao to join the army Zhou Yuan, and secretly felt that the events of the past two days did not end because Fan Dahei and Lin Haizheng were kicked out of Jinling, and Han Qian summoned Zuo Si's children again.

However, they can't say that Han Qian's suggestion has no merit, after all, Zuo Si's workshop is doing it with great fanfare, why does Zhou Yuan say that he can't do it, he can't do it?