"Sun Tzu 's art of war, fire attack chapter" once wrote: "the fire is windy but not downwind. The day wind is long, and the night wind stops."

It's enough to imagine the importance of the wind direction. Besides, because of the different terrain, what wind direction blows the most in Guanzhong all the year round, and what wind blows the most in other roads and states? As long as we understand it, can we all use it in war?

Let me tell you a story. It is said that in a distant time, there was a very powerful country, which was many times larger than the territory of our Tang Dynasty. Even the powerful countries such as white clothes and big food, and even those countries that went to the west, could only be trampled on by the iron cavalry of this country, and then submit to submission.

But it was such a powerful country without rivals that it failed in the war against Japan. Do you know why? It is because their generals did not know the sea breeze and wind direction when they went to Japan.

Looking at Li Chunfeng's thoughtful expression, Li Hong had to narrate the event that Kublai, the great ancestor of the Yuan Dynasty, fought against little Japan as an event of ancient times.

He is willing to sit here with Li Chunfeng to discuss the wind direction, wind speed and wind force. To be frank, he hopes that Li Chunfeng can travel south and North in the future, and find out the wind direction in the sea.

In this way, it will be an important reference for the future regardless of whether to invade Japan or Korea.

"But And then? " Li Chunfeng, Li Hong did not have the following, so he asked.

"It is such a powerful country that, after two expeditions to Japan, did not even set foot on its territory and ended up in a disastrous defeat."

Looking at Li Chunfeng and Xia Zhi's disapproving expression, Li Hong solemnly said: "what I said is the fact. You can't laugh for me. The strength of this country is not what you can imagine. In short, you can remember that this country is really powerful. For the first time, more than 900 warships were sent across Japan. However, because they did not understand the characteristics of the sea monsoon, the sea breeze overturned more than 200 warships and fled back in confusion. In the second time, they used more than 4000 warships, with a force of 140000. However, because they did not understand the wind direction on the sea and how terrible it was to follow the wind, all the warships were destroyed by the sea breeze. 140000 people, only three came back. "

The voice was backward, and there was a sound of air sucking around. The summer solstice and others were incredible. They would never have thought that the wind would destroy all the more than 4000 ships.

Only Li Chunfeng had a dignified expression and nodded from time to time in silence. After a while, he said, "what the prince said is not empty words. I have been to the East China Sea, where the wind is much stronger than that in Guanzhong. It's easy to overturn the boat. This time, I went to Donghai to study. But as your highness said, the strong wind can only be seen after driving into the deep sea? Moreover, the Japanese sent envoys to the Tang Dynasty, but there are traces to follow. They will not go to our Tang Dynasty for a few months. I understand. They have avoided the windy day you mentioned, your highness? "

"Yes, Japan is just a tiny place, but they also have something to learn from, that is, their understanding of the ocean, so..."

"So if I want to continue to study the wind, I have to go to the place with the sea around, but Chunfeng has an unkind request..."

"Say it."

Two people look at each other and smile, both see the smile from each other's eyes, the meaning of mutual utilization is too obvious.

"Chongwenguan, I heard that many students are interested in atmospheric pressure, and I am also interested in it. I feel vaguely that it should be related to the rudiment of the wind. Therefore, I want to borrow some Chongwen school students to travel with me around the coast of Datang."

"OK, no problem. You can choose how many people you want and who you want." Li Hong agreed happily.

He is sure that Li Chunfeng must have a plan, and I'm afraid he has a list. Don't forget that he and Yuan Tiangang are guests of Chongwen Museum, and they will visit Chongwen museum every month.

After they had a good deal, Bai Chun appeared in front of Li Hong in a timely manner. Li Chunfeng was not surprised and quickly got up and said, "Miss Bai."

Bai Chun smiles slightly, and after returning the salute, she hands Li Hong a calligraphy guide, and then stands aside.

Li Hong took a look at the character book in his hand, handed it to Li Chunfeng, and said, "here is a person's information. If you wander to Quanzhou on Lingnan Road, you can find this person. He may be able to help you a lot."

Li Chunfeng took over the dictionary. After a glance, he didn't know the people above, or even heard of it. He frowned and asked, "who is Lin Luan?"

"This man's family has made a living by sailing for generations, not only fishing at the seaside. His grandfather was the first group of people to go to Yizhou (Taiwan) in the former Sui Dynasty, but also the fleet led by his grandfather." Li Hong laughs. This man has already let Bai Chun's Jingwei look for him. He mentions Lin Luan in the local area, but his reputation is outside.

In the 5000 year history of China, except for the early Ming Dynasty, the other dynasties seemed to adopt the strategy of staying still for the magnificent ocean.The Ming Dynasty, later also because of the expansion of the sea ban thought, cut off people's continued exploration of the ocean, and then step by step to the abyss of backwardness.

Although the resources of the sea today are not as rich as those on the land, this is because people have limited means to draw materials, which does not mean that the treasures in the sea are limited.

Taking advantage of this opportunity, Li Hong also intends to explore and learn from the Lin family's shipbuilding industry through Li Chunfeng and chongwenguan students, so as to build bigger and more effective warships.

Li Chunfeng is now convinced of Li Hong's words. He believes that since the prince's Highness has said that this person is very important, there must be something extraordinary about this person, which is worthy of being respected by himself and others.

He nodded his head solemnly. After Li Chunfeng had learned the words, he saluted Li Hong again, and left the yard with the grain of grain.

Sun Simiao was very clear about the use of these people sent by Li Hong. Although they were not yellow and skinny, judging from their pale faces, they must have been in prison for a long time, and their faces lost the color that ordinary people should have.

He is not a pedantic person. What's more, Li Hong has repeatedly promised that if the vaccine is inoculated on people, his life will not be in danger. Only then will he dare to test the vaccine on these people.

Pei WANYING more and more felt that Li Hong was very mysterious. Master Sun Simiao did not tell her the real identity of Li Hong. However, these days, the master followed Mr. Li's words and said that even the prescription for curing smallpox was put forward by Li Hong.

But the black sheep in the master's mouth lost a wonderful book, which clearly recorded how to vaccinate and use vaccinia to cure smallpox.

Every time the master mentioned the good book named Baidu, he would feel very sad. But he often asked if he could not achieve such a lonely book under the background of the day, his expression was like losing his soul and said, "if he said that this is the only one, then he would certainly not have a second one."

Sun Simiao's dejected appearance makes Pei WANYING, a close door disciple, feel particularly distressed. Some of them want to use the beauty trick to trap Li Hong. If we can find him again, or Mr. Li just doesn't want to be seen by the master.

Sun Simiao has already seen through her little daughter's mind and told him: "don't think about something useless. He is not a mean person. If he can find it, he will give it to Lao Dao. He said that if he can't find it, he can't really find it."

"Is he so generous?" As soon as Pei WANYING asked about this, she could not help looking at the red ribbon fluttering on her left arm. It was also true that if people were not generous, they would not have bought so many cloth at a high price because of such a small detail, and then cut them into strips and tied them on her arm.

All this is just to let the people of Lantian feel less nervous when they see soldiers in white robes.

"He hasn't been looking for you lately?" Sun Simiao took time to sit on the chair for a while and looked at the student who was thinking of his mind.

I'm afraid Pei Wanhong is blind for five days.

"No, I've been around you these days, following you to develop this vaccine, and I haven't met him." Pei WANYING whispered.

Sun Simiao took a look at Pei WANYING. Of all his disciples, only this female disciple has the best talent and is most suitable for inheriting her own mantle. Now, she is giving her everything without reservation, and she is expecting her to inherit all of them.

But if the prince's highness stares at him, the professor will be useless. In the future, will it be difficult for the princess to go to the mountain to collect herbs every day? Or let the princess see the doctor for the people? It's very unrealistic.

But if Wan Ying is allowed to leave now and let her associate with his highness, Sun Simiao will not be able to take his medical skills into the grave after his own time limit.

Thinking of this, Sun Simiao sighed helplessly. He had to listen to the fate and said: "we should meet again. We can't miss the etiquette. We can't miss this medical skill in our spare time. Among the many disciples of master, you have enough talent to learn medicine."

Pei WANYING's cheek is more red. What does Master mean by this? What does it mean to meet or have to meet? Does Master think that Mr. Li is a good man? Is he a person worthy of TOEFL?

But what about yourself? What do you think? Pei WANYING was in a trance for a moment. In her mind, she could not help but think about the first time they met and all kinds of things on the first day. Finally, she just shook her head. It seemed that this person was very mysterious.

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