Outside the west city of the capital, Longwandu (Note 1). Pen % fun % Pavilion www.biquge.info

At the beginning of the afternoon (half past one o'clock in the afternoon), several large boats were parked here, and a large group of people gathered on the shore, as if to say goodbye to each other before boarding the boat. But if you look closely, you will find that more than half of them are wearing the costumes of the southwestern Zhuyi, while the other half are wearing official uniforms.

This is exactly the reason why the Li Fan Yuan is sending back the local officials of the Tusi who came to the capital from the Yundian region to worship Mu Ying. Zhu Yuanzhang couldn't always drag them back and didn't let them go back, so he agreed to their request to go back after several inspections.

Most of the toasts or leaders are in a hurry to go back, not because they are afraid of being usurped, but those who dare to come to the capital are those who are sure that nothing will happen; Mainly because they have been out for more than a month, and the weather is going to get cold. At that time, the global temperature was lower than now, and although the vegetation did not dry up in winter, the wild animals were also winter, and the toasts needed to prepare for the winter, so they were in a hurry to go back.

Except for those who miss their relatives, the people below are all happy. According to the tradition of the Celestial Empire, the foreigners who came to the capital were all well entertained, and their food and clothing were better than their own homes, so of course they did not want to go back.

But there was a person from Tusi, from Tusi's younger brother to the most ordinary clansmen, although he didn't show how much he wanted to go back, but when he arrived at the dock today, he was obviously relieved.

Of course, they are the people of the Sandu Division of Enlightenment in Lin'an Mansion of Yundian Province. A few days ago, they were afraid of being discovered by Zhu Yuanzhang, and they were worried every day, but today they are finally relieved.

Dragon Black whispered to Long Shangdeng: "Dad, you can finally go back." A few days ago, I called us out many times in the Imperial Court, and the people who carefully checked the faces and appearances came to track down the origin of the poison, and it really scared me enough, for fear of being found. ”

Long Ping'er focused on another matter: "I don't know who is going to poison whom?" We have been living in seclusion these days, and we don't know anything other than the canonization of the emperor's grandson by the Ming Dynasty. ”

Dragon Black said, "How many times have I told you that I am not allowed to talk about this again. We haven't returned to our toast yet. ”

The two of them kept silent. After waiting for a while, the people of the Rifan Yuan completed the proper procedures for sending Yi back and let them get on the boat and go back. From here, they will take a boat along the river to a place in the southwest of Huguang Province near Guangxi, and then get off the boat and walk back to their own Tusi.

The people of the Long family were all in a hurry to get on the boat, only Long Ping'er got on the boat with everyone, but he kept standing at the stern. The ship sailed far away, and it was almost impossible to see the walls of the capital, Long Shangden came to persuade Ping'er to enter the cabin to rest, Long Ping'er said: "The capital of Daming is really too prosperous, I couldn't imagine it before I came." Big brother, do you think we will have a chance to come to the capital again in the future? ”

Long Shangden replied casually: "There will be a chance, there will definitely be a chance." ”

Long Ping'er knew that he didn't mean it, but he couldn't see the capital clearly, so he could only follow his eldest brother into the cabin with a regretful face.

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Yun Xi returned to Wenyuan Pavilion in Wenhua Palace, thought about it, and waited until he went to Qianqing Palace to have dinner with Lao Zhu in the evening, and then told Lao Zhu about what happened at Chang's house. He rested in the dormitory for a while, came to the study and picked up the recital of Lao Zhu's reply last night sent by the little eunuch in the palace this morning, and prepared to start reading.

He pushed open the window, felt the cold air from Simberia, and sighed that he still had to endure the days without glass windows. Then he sat down, spread out his fold, and suddenly thought: Didn't he just have a small Zhuangzi? This Zhuangzi can not only provide himself with money, but also serve as a place for scientific experiments!

Thinking of this, Yun Xi didn't have the heart to watch the twists and turns. He thought: Although he doesn't have any craftsmen in his hands, he can go to the south of the city to hire them, and the craftsmen don't have national tasks all year round, and they also take on some private jobs in their free time to earn some money to improve their lives.

Of course, when it comes to armaments, such as gunpowder, armor and other private work, I dare not take it, but the rest is fine. The things that Yun Xi wants to improve now are glass and cement, which are very useful, and they don't have to be mass-produced like salt.

The problem is that Yoon-hee doesn't know how to make glass and cement. The glass is better, Yun Xi remembers that the Venetians should have made glass at this time, and the Westerners can make it, but it makes no sense that the Easterners can't; But cement is not easy to say, Western countries have only invented it in modern times, so it can only be tried.

In addition, Yun Xi also wants to build a large-scale steelmaking. In his previous life, Yun Xi was born in a family of workers in a steel factory, and he was very familiar with ironmaking and steelmaking; But it is precisely because of familiarity that I clearly know how difficult it is to make steel. In the fifties, the earth-based blast furnace only produced pig iron, not steel, and other steps were needed to process it into steel, not to mention that it was very difficult to build a blast furnace.

The refractory bricks and slag agents of the Ming Dynasty could not reach the level after the industrial revolution, and this was a gap in the production process, which could not be solved in a short time, at least Yunxi could not solve it in a short time. The only thing he could change was to change the power from charcoal or coal to coke. And the investment in building a blast furnace is too large, Yun Xi doesn't have so much money to smash into the experiment now, so he can only wait until he becomes the emperor.

Yunxi's thinking has expanded to think about the whole technology. Many people may not think that in the early years of the Ming Dynasty, although China's scientific and technological level was still above that of Western countries in general, and it was much ahead of the West in many aspects, it was far behind the West in astronomy and geography.

Ever since Dong Zhongshu developed the theory of celestial and human induction, in China, astronomical and geographical problems have all become philosophical problems. Although our observation of astronomical phenomena has been improving, no one has studied or been allowed to study the causes of various astronomical phenomena. In real history, until the end of the Ming Dynasty, China's research on the causes of astronomical and geographical phenomena was not much different from that of the Han Dynasty. There are still many people who think that the sky is round and the place is round.

Many scholars in Western countries at the same time during the Hongwu period believed that the earth was a sphere, and although they could not prove it at the time, it did not prevent them from believing it. Copernicus's heliocentric theory was also based on the concept of the 'earth'.

The problem is that the study of astrophysics is the starting point of the modern scientific system, and Kepler's three laws and the law of universal gravitation together mark the initial establishment of the modern scientific system. If a modern scientific system cannot be established, whether it is the same as that established by Newton and others, it is only a matter of time before China is surpassed by Western countries.

Therefore, Yun Xi believes that the theory of 'heaven and man induction' must be broken. But how to break this widely accepted theory Yun Xi is now at a loss.

Yoon-hee, who was pacing around the room, kept thinking about it. It wasn't until Wang Bu knocked on the door and told him that it was the beginning of the unitary time, that he was shocked to realize that he had not done anything in the afternoon, and he pondered this.

Yun Hee, who reacted, looked at the music piled up on the table and wanted to cry without tears. But it's time to have dinner with Lao Zhu soon, and I don't have time to watch it. Yun Xi could only grab a few casual and look at them hastily, and then set off for the Jinshen Palace.

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Note 1: It was probably near the current Zhongshan Wharf.