These teachers have all taken Song Qingyue's basic chemistry class and know what oxygen is and what oxides mean.

"Aluminum reduces iron oxide. To put it simply, the oxygen atoms on iron are robbed by aluminum."

"Ah! That's it!"

Song Qingyue hesitated and said: "I'm wondering if this reaction can be used for welding."

"Welding! That's right! This way you don't have to put it in the furnace!" A master shouted excitedly.

Song Qingyue added: "It's the propeller that I mentioned before that can be placed at the stern of the ship. Masters, let's think of ways to use this reaction to manufacture it."

In the past, because propellers could only be cast in one piece, only small propellers could be made, which simply could not meet the propulsion requirements of warships.

But with welding technology and screws and nuts, it should be possible to build a propeller suitable for medium-sized warships.

Of course, there is no need to think about Zheng He's voyages to the West using large treasure ships. The treasure ships themselves are not warships.

Song Qingyue wanted to build a fast and maneuverable warship, but its size and displacement were not equivalent to its combat power.

After saying this, the time was almost up and Song Qingyue had to return immediately.

After leaving the cave this time, Song Qingyue spent another leisurely time in the temple.

She sleeps until she wakes up naturally every day. After getting up, she goes out for a walk and exercises. If any relatives and friends come, she receives the guests. If no one comes, she goes back to the house to write physics and chemistry textbooks.

At this stage, it is still completely unsystematic. She just randomly lists some knowledge points that she can think of. She plans to wait until enough knowledge points are listed before slowly organizing them into a system.

Understanding it yourself and teaching others to understand it are completely different things.

During the communication with the cave masters, she discovered that several times she used one knowledge point that others did not understand to explain another knowledge point that they did not understand, and then, like a matryoshka doll, the more she explained, the more she continued to explain.

The more you talk to people, the more confused they become.

She also tried hard to recall what she had learned in junior high school, but many times, the content she learned in junior high school, high school and even some universities were mixed together in her mind, and it was really not easy to sort them out in order.

.

~

At this time, Li Zhao had arrived in Fujian by sea.

After resting in Fujian for a few days, I was planning to board a ship in Kinmen to go to Xiaoliuqiu on the other side.

Governor Ou of Fujian and Lord Shen, governor of Guangdong, both came to see Li Zhao on board.

This time, Li Zhao brought with him on board the ship, in addition to 50,000 sailors and infantrymen who were secretly trained in the Lingnan area, there were also many blacksmiths and old craftsmen who made fireworks.

Prince Su's Mansion surrounded a large piece of land on the west side of Xiaoliuqiu.

More than ten years ago, when King Su and Li Zhao first arrived on the island, they had a fight with the indigenous Tibetan tribesmen in Xiaoliuqiu.

Those who were willing to surrender were incorporated into the naval force; those who were unwilling to surrender were already driven to the mountains in the middle of the island.

Now that Li Zhao wants to bring more than 50,000 people to the island, he will inevitably need a larger territory. After arriving on the island, he will inevitably have to compete with the Fanzi on the island for territory.

Li Zhao's idea was to include as many people as possible, and those that really couldn't be included had to be beaten.

It's just a good time to use the Tibetan people to train soldiers.

Xiaoliuqiu is a good place. It is warm and humid after the season, and the land is fertile. You can grow two crops of rice a year. It would be a pity not to occupy such a good place.

(End of chapter)


Chapter completed!