Yang Chong thought for a while and said: "The evolution of the map is a reaction to the strength and weakness of a country, and I leave it to the senior brother, because I am also worried about the loss of knowledge; Don't spread that picture, once it is used by Great Food and Persia, the consequences will be unimaginable. But it can be gradually improved, you go to the military department to find Xu Sanchuan, Cao Tong, Zhang Zhenzhou has been operating in Liuqiu for many years, and once presented a map to the Son of Heaven as a gift, there should be a chart that has been passed through Liuqiu and Qiongya, you can save a little trouble. ”

Cui Hongdan said understandingly: "No problem, but I think Guogong can open a course at Chang'an University and teach some courses in astrogeography, in fact, most of the current theories are to repeat the knowledge of the ancients, and there are very few things that they update; Even if Guogong doesn't have time, he will say a paragraph at random every time, which is also very helpful to students. Mozhuang's idea is novel, but it is not enough to have the beginning. ”

Cui Hongdan's words made Yang Chong a little embarrassed, as the head of Chang'an University, Yang Chong really hadn't done much for the university, including Mozhuang and Mozhuo Academy, Yang Chong didn't help him when he fell to the ground with a broom, so Yang Chong decided to take advantage of the opportunity to do something. Yang Chong thought for a while and said what he needed Mozhuang to do: "You know Sinan, I want to use him to sail in the sea, and I need you to come up with a feasible process." ”

Yang Chong took the three of them to the study, took out a set of tools he made, and used the coordinates on the map to demonstrate while talking, Cui Hongdan asked Yang Chong about the principle and use of the triangular ruler and the protractor in his hand, clapped his hands and said: "Yue Guogong, amazing, you really left a hand, I said wrong just now, just by virtue of this, you have no problem opening a mountain and establishing a faction." ”

Yang Chong said with a smile: "This is geometry, the coordinates are the horizontal and vertical directions, the two lines are perpendicular to one point, people or ships are moving on the point, and they always grasp the direction through Sinan, and they will not deviate from the route." ”

Yu Wenkai, Cui Hongdan, and Tian Yu are all masters in this regard, and they can understand the principle after a little deduction, Cui Hongdan just doubted and said: "The sea is vast and boundless, completely different from the Yangtze River and the Yellow River." ”

Yang Chong said with a smile: "If you sail in Kunming Pond and lock the person who controls Sinan in a closed room, won't he be like being in the sea and can't distinguish between east and west, north and south?" But I'm afraid one person is not enough, at least there are two Sinan to reduce the error, plus the mapping comparison, and the actual observation of the sea surface, it should be a working group. ”

Cui Hongdan said without worry: "As long as the general direction is right, the personnel can be trained slowly." Yue Guogong, I know that you are preparing for the Eastern Expedition to Goguryeo, and if you have any other ideas, you might as well talk about them together. ”

Yang Chong said: "Still on the ship, I am going to load the Greek fire, the transfer machine, and the bed crossbow on the ship, the problem of the Greek fire is the storage and transportation of grease water, which cannot leak or be seeped into the water in the long-term turbulence." The key to the transfiguration machine and the bed crossbow is the problem of fixation, not to warp the board in the middle of a war. ”

Cui Hongdan agreed with these views and said casually: "Yue Guogong, you have every opportunity, leave these things to us." ”

The four of them returned to the restaurant easily, and Cui Hongdan and Tianyu concentrated on the dishes and pondered about Sinan's affairs; Yang Chong and Yu Wenkai discussed the postal service, and at present, from Gaochang to Chang'an, a post line has been established, along the way there are 121 post stations, with 2,000 horses. The letters of the government were delivered by the people as post guards, three hundred miles a day; Military secrets and urgent items are served by soldiers as post guards, 500 li a day, and each post guard has a letter plate and other identity documents.

Yang Chong hoped that the college could provide a group of graduates, and after laying down Jiangdu, he began to prepare for the construction of post lines in Chang'an, Luoyang, and Jiangdu, and used land and water stations to deliver the news of Jiangdu in a timely manner. In addition, Yang Chong wanted to promote civilian post donkeys in Guanzhong, so as to facilitate the communication of the people and the transmission of information by the money bank.

Yu Wenkai suggested that a group of people should be selected from among the scholars who went to Chang'an to participate in the imperial examination, so that the government could take up their posts after training, Yu Wenkai criticized Yang Chong and said: "Don't press everything on yourself, always want to do it well at one time, in the officialdom, sometimes something happens is inevitable, as long as it is not a mistake of principle, if you are wrong, you can change it, it is not a big deal." ”

Yang Chong thought about it, the post line contains a series of things such as choosing locations along the way, and it is inevitable that the counties and counties along the way will compete, and it is really not up to him to say it alone; The post line was originally under the name of the Ministry of Rites, but he still made his own request, so that Cui Zhi went straight to annoy this god.

Yu Wenkai and others left with Yang Chong's revised drawings after dinner, and handed over the design drawings five days later, which were reviewed and approved by the Ministry of Industry; Before the start of construction, in addition to the assets of Yuan Xiren and Duhuhong, which were mortgaged 120,000 yuan, Jiang Fei mortgaged 70,000 yuan with Jiuquan Iron Works, and the 190,000 yuan deposit was paid to the account of the household department at one time. With this money, Yuan Tiangang immediately went to the government to change the land contract and urge the construction to start.

Tianwu saw that the final drawings were boring, they were all ordinary houses, no matter how good the villa was, there was no problem such as a little organ, so he divided the division of labor, handed over the villa, stone bridge, and corridor to Li Chun, and the rest were all contracted to the outside engineering team to construct according to the drawings. As soon as Li Chun's stone bridge, promenade, and first villa came out, Yuan Tiangang saw the doorway, and Yang Chong's creativity was all on the wasteland; If it is a lonely general house, it will definitely not be sold, and now a new area is formed, I am afraid the price is not low.

The first villa was bought by Yuwen Kai, 7,000 yuan, which was a gift from Yuwen Rutong to respect Lao Tzu; Yang Gongqing came to see and ordered a second villa, 8,000 guan, and asked Tianyu to change the drawings, adding two basements as wine cellars and a secret room with Luban locks. Yuan Min, the father of Yuan Xianren, bought a villa of 4,000 guan, and chose a good location early, and the construction team was in the hands of his family, how to decorate and how to decorate.

Yang Chong asked Yuan Junbao to adopt the method of pre-sale, paying in advance to buy a 50% discount, a set of 100 yuan, and the average price of the store was 230 yuan; Then pull up silk banners everywhere in Chang'an to advertise, Dasui has no management fee for outdoor advertising, as long as it is a residence, the store agrees, how many places to pull how many places, for a while, Chang'an knows the things of Kunming Town.

The locals of Chang'an know that it is a place where birds do not lay eggs, but many of Jiang Duo and other Sanwei are from Fan soldiers and bandits, and they don't care about these at all, as long as they are in Chang'an, they can settle in the fields, and they don't live the same place. What's more, next to Kunming Town is the pasture where the veterans are placed and the Mozhuang of Yue Guogong, so it is not pleasant to go to the yo-yo horse if there is nothing to do, and it is convenient to find a job when you are in difficulty.

(End of chapter)