Xia Xue, who came from later generations, naturally attached great importance to maritime strategy, and she soon built harbors, shipyards, and naval training bases in Minzhou, Yizhou, Sanshawan and other places, and built an angel navy that could protect the safety of Fujian waters as soon as possible.

For the navy, the first thing to practice is water. Only if you are familiar with the nature of the water, you will not be afraid of the sea. It is conceivable how a person who does not understand the nature of water can become a navy. The biggest problem of the Angel Army Navy is still that there are too many landlubbers. Most of the soldiers drawn from the Angel Army's auxiliaries were landlubbers.

This is not a very difficult task for the bearded guest. Under the bearded man, in less than three days, the landlubber turned into a water duck. The key to it is actually very simple, that is, it is ruthless enough. Be ruthless, throw them into the water, choke on a few mouthfuls of water, and you will naturally learn.

So, those fighters who have just joined the Navy receive such training. The veteran throws the recruit into the sea, and you can keep throwing it around. As long as they don't drown, they will never reach out. When the salty and bitter sea water is almost drunk and your stomach is swollen, you will almost get rid of your fear of the sea. Then point out for a while, and you'll slowly learn to splash in the water yourself.

Secondly, it is necessary to be familiar with the operation of bumps.

As a navy, you have to deal with the bumps, rocks, sharp turns, and even high tilts of the ship. The minimum requirement is to walk on a rickety deck as if it were on the ground. If you vomit or something, you're still a rookie, and you have to keep training. The best way to prevent vomiting is to do a handstand often, and if you persist for more than a month, you won't vomit. There is also the constant stepping on logs on the surface of the water. The logs floating on the water are very difficult to control and roll around. When a person stands on it, he must insist on not falling for three hours before he can basically pass the test.

However, this is not enough, but also to practice diving, swimming, climbing, jumping, knotting, zipping and other aspects.

In response to these professional knowledge of the navy, Xia Xue has formulated a detailed training plan. As long as these plans are implemented step by step, a group of relatively elite naval soldiers will be able to form a prototype after half a year. These plans are much more accurate and effective than the experience of the bearded guest and Sima Chao. After all, it is the result of the later generations summing up the experience of countless predecessors.

Xia Xue also took the time to give personal lessons to the admirals, imparting them the knowledge of navigation, and attaching importance to the training of military generals, which is Xia Xue's consistent characteristic.

She drew a map of the world from memory, probably the earliest and most accurate map of the world in the world. The annotations on the map were copied by Xia Xue according to her own memory, and in some places, it is impossible to be too accurate. However, it is infinitely more accurate than any map of this era.

"This is our world."

Xia Xue said straight to the point.

Looking at the surprised faces of the bearded man, Sima Chao, Zheng Shichang and other naval generals, Xia Xue said slowly: "Don't be surprised, our world is spherical. We live on the surface of a huge spherical body. It's just because the ball is so big that we feel like the surface is flat. We often see the sea and the sky on the horizon coincide with each other, because our world is actually curved. ”

No doubt. Xia Xue's words shook everyone present. The boss of the bearded guest, Sima Chao, Zheng Shichang and others with open mouths. The reason is very simple, everyone has always thought that Huaxia is the center of the world, the sky is round, and Huaxia is the center of the world. However, judging from the map drawn by Xia Xue, Huaxia only accounts for a very small part.

Of course, they didn't doubt Xia Xue's statement, in fact, they actually vaguely guessed something about the fact that the earth was round. Only Xia Xue's statement can perfectly explain the strange phenomenon of the sea and sky.

Xia Xue also told them the concept of seven continents and four oceans, and at the same time briefly introduced the characteristics of each continent and the characteristics of each ocean. These are all from Xia Xue's knowledge, which is at least 2,000 years ahead of this era.

After listening to Xia Xue's explanation, the naval generals such as Qiu Qiuke, Sima Chao, and Zheng Shichang realized that the navigation knowledge they thought they had mastered before was actually just a frog in the well.

They couldn't help but admire this fairy-like, supernatural, and erudite queen.

Xia Xue also explained to the admirals about the monsoons, trade winds, currents, tides and other nautical knowledge of each sea, which is the most important knowledge for the captain, if he does not master this knowledge, he will not be able to go to sea at all, and he will not be able to sail far. The admirals such as Qiu Qiuke, Sima Chao, and Zheng Shichang listened attentively, and also took notes in detail.

Xia Xue also talked about how to use lemon juice, citrus juice and other fruits rich in vitamin C to prevent scurvy, which is the most susceptible to sailors during sailing. In the history of human voyages, scurvy was definitely a deadly roadblock. This obstacle was not solved until more than a thousand years later in the Sui Dynasty by a captain named Cook, who discovered that lemon juice was effective in preventing scurvy. And Xia Xue has now let the admirals of the Angel Kingdom master this important knowledge, which can ensure that the navy of the Angel Kingdom can sail farther and stay at sea for a longer time.

The more than ten days of teaching opened the eyes of the naval generals such as Qiu Beard, Sima Chao, and Zheng Shichang and benefited a lot. It also made the navy of the Angel Kingdom far ahead of all the countries in the world in this era on a theoretical basis, laying a solid foundation for future maritime trade and maritime development.

After the lecture, Xia Xue said solemnly to the admirals who were full of admiration and admiration in their eyes: "All the knowledge I teach, pay attention to strict confidentiality, and it is strictly forbidden to leak it, because these are confidential. Xia Xue knows the importance of patents, and these advanced knowledge are the patents of the Angel Navy, and only the Angel Navy she leads has the right to have.

"Yes!" The bearded man, Sima Chao, Zheng Shichang and other admirals stood up with a "swish", stood straight, solemnly and solemnly, and replied loudly in unison. As admirals, they are well aware of the importance of this knowledge, which is the secret weapon of the Angel Navy to surpass the enemy navy, and of course it must be kept strictly secret.