When I entered the office, I saw Fan Jiao reading a letter. When the www.biquge.info saw the river coming, he put down the letter, and looked at the river line, looking like he wanted to say something.

When Jiang Hexing saw her appearance, he couldn't help laughing and said, "What's the matter?" ”

Fan Jiao said: "My father specially invited two stargazers from Chang'an, and he plans to teach some students to watch the stars in the future, so that they can know how to go at night at sea." Now he plans to build a shipyard in Anwu, but he doesn't know if he can make some small sailboats. The sailing ships in Xianwu City are too big, and they are okay in big rivers, but not in shallow rivers. ”

If Jiang Hexing says who he admires the most in this era, Fan Jia will definitely be the first to be admired.

Jiang Hexing nodded and said: "Of course you can, we don't restrict this, we only restrict the flow of salt and iron into the Han land, for fear of causing unnecessary disputes." Whoever else wants to do whatever they want. It's essential to sail the stars at night, but it would be nice to have something else. ”

Fan Jia looked at Jiang Hexing expectantly.

Jiang Hexing continued: "Have you heard of Luan Da, the Wuli general during the Emperor Wu period? ”

Fan Jiao shook her head and said, "I haven't heard of it." ”

Jiang Hexing said: "I'll tell him his story. Luan Da is a native of Jiaodong and a monk. He was tall and handsome, and someone recommended him to Emperor Wu. Luan Da saw Emperor Wu, he was very good at talking, and he spoke big words as if it were true. He himself said that he often walked in the sea, and he had seen many immortals, and he himself had learned from the master, so he would know a lot of spells. Emperor Wu asked him to experiment, and he took out two chess pieces, and those two chess pieces could actually get together. Emperor Wu believed him, and then rewarded him with General Wuli, rewarded him with many things, and promised the eldest princess to him. Later, Emperor Wu found out that this man was a liar and that no spells worked, so he killed him. ”

"What about the eldest princess?" Fan Jiao asked anxiously.

Jiang Hexing is inexplicable, I want to talk about those two magical chess pieces, but you want to listen to gossip, do women always like gossip?

Jiang Hexing shook his head and said, "Eldest princess, I don't know how she is, this matter is not important." What matters is why those two pieces can get together. ”

Fan Jiao suppressed her curiosity and asked listlessly, "Then why can the chess pieces get together?" ”

Jiang Hexing said: "I estimate that the chess piece Luan Da has done his tricks and feet, and he must have magnetized it, magnetizing the magnet, have you heard of it?" ”

Unexpectedly, Fan Jiao had really heard of it, and Jiang Hexing seemed to be able to make a compass.

He explained in detail how to make a simple compass out of magnets, which can be tested and improved in the future. In the future, on the vast sea, you will be able to roughly identify the direction, even if it is rainy or foggy.

At this time, Fan Jiao was interested, and begged Jiang Hexing to talk about it again in detail, so that she could record it and let Fan Jia go back and test it.

Jiang Hexing patiently told her what a magnet is, how to magnetize the needle, and how to mark the north and south on the needle. As for whether this thing can be applied and widely used, it is all up to Fan Jia to continue to explore.

In addition, Jiang Hexing also asked Fan Jiao to go to school to ask for a few geometry textbooks to send to Fan Jia, so that they could have a quick start learning process for graphics and the like.

Fan Jiao is very happy with Jiang Hexing's help, and Jiang Hexing is even more willing to see the emergence of another shipyard, and there will be progress only if there is competition. Otherwise, the current shipyard will only rely on the old capital, and the temper will be very big, and the people who buy the ship will not only line up and not talk about it, but also suffer a lot of anger. Even going to Jilin and Xia to set up branches have great opinions, and they think this and that. Jiang Hexing thought that it would be best for someone to come out, so as not to offend those old qualifications and hurt the peace.

If there were ships that could go to sea, it would be possible to find cotton seeds, maybe cotton cloth would be available sooner, and more people would be able to protect themselves from the cold in winter.

Thinking of this, Jiang Hexing personally wrote another letter to Fan Jia. Tell me about his knowledge of ocean voyages, although he is only hearsay, but some information is hard to buy in this day and age. In addition, the letter focused on mentioning cotton, roughly where it is produced now, what it looks like, what season and what form, Jiang Hexing elaborated one by one, hoping that if Fan Jia sails away one day, let him collect such things, and Jiang Hexing is willing to buy them at a high price.

Fan Jiao didn't understand why Jiang Hexing wanted to write another letter, but she was very comforted.

While Jianghexing was busy with various constructions, an uninvited guest arrived to disrupt his plan, and Yan You came from Chang'an.