Li Jie originally came with Liu Ying, but now he was relieved when he saw that Liu Ying was fine, but he didn't expect that he was stopped by Lao Zhu and stayed. This made him worry all of a sudden. After all, Lao Zhu had too many tricks. Who knows what he would arrange for him?

"The news sent by Ningbo Port is that Zou Pusheng has trained the first batch of troops almost the same. After Zhang Dingbian returns, they will be able to send troops to Tsuma Island immediately!" Zhu Yuanzhang said slowly.

"So fast!" Li Jie was also shocked when he heard this, but it was normal to think about it. Zhang Ding went to recruit people, and Zou Pusheng had already started training troops. Both sides were carried out at the same time. Moreover, Zou Pusheng and others lived overseas and also needed force protection, so they could go to the battlefield with just a little training.

"Where has Master Mu been there? Is the recruitment of fishermen with nine surnames over?" Li Jie asked again.

When talking about Zhang Dingbian and the fishermen of Jiu surname, Lao Zhu's face became a little unfair, but he still replied: "Zhang Dingbian has arrived in northern Zhejiang, and the fishermen of Jiu surname have almost recruited them. Now the first few groups of fishermen have arrived at Ningbo Port, and he is probably going back."

"That's great!" Li Jie also clapped his face excitedly when he heard this. His previous plan finally began to be implemented. This was not only to solve the Japanese pirates, but also to Shi Jian's silver mine. The most important thing was to open a hole in the sea ban. This might even be the beginning of the Ming Dynasty's journey to Shanghai's power!

"It's a coincidence that you are so happy. In a month, I'll leave it to you about escorting Zhang Dingbian and the others to Tsushima Island!" Zhu Yuanzhang felt unhappy when he saw Li Jie's excited appearance, and immediately spoke.

"I obey the order!" Li Jie agreed without hesitation. The whole plan was proposed by him. Of course, he wanted to see the implementation of the plan with his own eyes, so even if Zhu Yuanzhang did not allow him to go, he wanted to fight for it.

Seeing Li Jie agree so happily, Zhu Yuanzhang became even more unhappy. In his opinion, going out to sea was a chore and there was a certain danger. If it were an ordinary official, he would definitely be reluctant. However, he did not expect that Li Jie not only agreed, but also showed great excitement. This made Zhu Yuanzhang feel like he was hitting the empty space and felt uncomfortable all over.

However, Zhu Biao, who was next to him, stood up and said, "Father, Li Jie and Yuning are engaged, so it is really not appropriate to take risks. I think it's better to leave this matter to someone else!"

I have to say that the father-in-law felt sorry for his son-in-law, but Zhu Yuanzhang immediately refused: "He proposed the plan, so he must participate, and the people in Zhang Dingbian only believe him. If he doesn't go, I'm afraid others won't be able to do this at all!"

"Your Highness, although there are risks in going to sea, as long as you choose the route and time, the risk is still very small!" Li Jie also said at this time. He didn't want to miss such a good opportunity to go sea.

Zhu Biao did not surprise his father's refusal, but he didn't expect that Li Jie would want to go so much, which made Zhu Biao not even more likely to say anything.

"Since you want to go so much, then prepare and set off for Ningbo in half a month!" Zhu Yuanzhang said with a final say. The fleet would not leave in a month. Li Jie would go half a month in advance and be familiar with the situation.

"My memory, Li Jie, obeys the order!" Li Jie saluted again.

At the same time, Xie Jin finally came to the hot air balloon workshop next to the Military Weapon Bureau with full of doubts. This was his first time here, but he found that there were soldiers guarding the door. After all, the Ming Dynasty is now studying the use of hot air balloons in the army, and it is estimated that this place will also become a part of the Military Weapon Bureau in the future.

Xie Jin wandered outside the hot air balloon workshop for a while, hesitating whether to go in, but at this moment, suddenly someone behind him said in surprise: "Master Xie? Why are you here?"

Xie Jin felt familiar when he heard the sound. He turned around immediately, but found that the person behind him knew Guo Zhenglin from the Imperial Heaven Supervision. Speaking of which, Guo Zhenglin was young and promising, and had a deep attainment in astronomy at a young age. Xie Jin and the other party had drunk alcohol together, and he was a friend who was still a good friend.

"Brother Guo, why are you here?" Xie Jin asked in surprise when he could see his acquaintance here.

"Uh? This is our Imperial Heaven Superintendent. I want to know why you are here, Brother Jie?" Guo Zhenglin was stunned for a moment when he heard this.

Since the appearance of hot air balloons, their Imperial Air Prison has been involved. Although the entire hot air balloon workshop was built by Li Jie, it is now managed by the Imperial Air Prison. They also do the improvement of hot air balloons in normal times. After all, most people who study astronomy are knowledgeable, otherwise Zhang Heng would not have designed exquisite instruments such as seismometers and armillary spheres.

Xie Jin was also surprised to learn that the hot air balloon workshop actually belonged to the Imperial Heavenly Prison. Could it be that Li Jie asked him to come here and was related to the Imperial Heavenly Prison?

"Brother Jie, have you not answered my question yet?" Guo Zhenglin came to Xie Jin and asked again.

"This..." Xie Jin hesitated for a moment, and finally spoke, "Actually, I drank with Li Bandu yesterday, and he was the one who guided me to come here."

"It turns out that Li Bandu asked you to come, so it's not surprising. Let's go in together!" Guo Zhenglin immediately showed a sudden expression when he heard this, and immediately laughed and grabbed Xie Jin and was about to walk in.

"Brother Guo, do you know what Li Bandu asked me to do?" Xie Jin was a little confused at this time. Why did Guo Zhenglin know something when he mentioned Li Jie's name, and he pulled him in without asking anything?

"Of course I know. Brother Jie, you are knowledgeable and talented. I should have thought of inviting you to come!" Guo Zhenglin also showed an annoyed expression at the end. He had forgotten to know Jin, a talented man. Fortunately, Li Jie invited him.

"Then what am I going to do?" Xie Jin asked curiously again. He didn't know what he was going to do, so why did Guo Zhenglin know?

"Let's go, it's here. When you go in, you will understand!" Guo Zhenglin deliberately kept it in, and then pulled Xie Jin and accelerated his pace.

The confused Xie Jin could only follow Guo Zhenglin and soon came to a house that looked quite ordinary. When they entered the room, Xie Jin realized that the room was full of people, some of whom he knew were mostly officials of the Imperial Heaven Supervision Bureau, but some seemed to be from the Ministry of Works.

"Brother Jie, you're a coincidence. Today is the star theory that Wang Yue and Wang Sichen talked about. This is the latest theory that Wang Sichen and Li Bandu discussed. Our Imperial Heaven Supervision has proved the correctness of part of this theory!" Guo Zhenglin said excitedly again.

"What is the star theory?" Xie Jin asked again in confusion. He also had some research on astronomy, otherwise he would not have known Guo Zhenglin, but he had never heard of any star theory.

"The so-called stars actually refer to the sun, the celestial body that can shine and heat. The earth we are in, as well as the surrounding Venus, Jupiter, etc., all revolve around the sun, but the sun is not fixed, but runs in a way that we cannot understand for the time being. This is the biggest breakthrough in our astronomy history!" Guo Zhenglin introduced excitedly.

"We revolve around the sun? How is this possible?" Xie Jin looked suspicious when he heard this. After all, this matter was too contrary to his intuition.

"You may not be able to understand this for the time being, but believe me, as long as you listen to a few more classes, you will be able to figure out the reason soon!" Guo Zhenglin did not explain, but pointed to the front desk in front, because Wang Yue, who was in class today, had already walked onto the podium and was about to start the lecture.

Xie Jin also looked at Wang Yue on the stage curiously when he heard this. He just heard Guo Zhenglin call the other party Wang Sichen. He knew that Si Chen was a small official of the ninth rank, and the green official uniform on the other party also confirmed this, but the officials below sat upright and did not look down on the other party's low rank.

Compared to the sloppy past, Wang Yue now seems to have become a different person. Although his official uniform is a bit old, it is washed cleanly, his beard on his face is neatly trimmed, and his whole person exudes a kind of vitality. He is more than ten years younger than before.

"Well~, today I want to talk about why celestial bodies such as Earth, Jupiter orbit the sun without leaving. After discussing this issue with Li Bandu, Li Bandu proposed a conjecture, that is, there is a force that we cannot see between celestial bodies, just like magnets attracting each other..."

What Wang Yue said is very novel to the following people who are listening to the lecture. Sometimes a single sentence can solve the problems that many people have troubled for many years. Of course, this will also give them more questions. However, no one disturbs them during the lecture, because there will be a period of free discussion later, and they can speak freely.

This kind of public lecture was originally created by Li Jie, but sometimes Li Jie couldn't come, so slowly others started to give lectures on stage. Now a tradition has been formed. As long as you think your point of view is correct, you can give a speech on stage. Of course, someone will definitely put forward a refutation point of view later. As long as you can refute everyone, your point of view will be recognized by everyone.

Xie Jin listened to the contents that Wang Yue heard, and he could understand some things, but he became more confused as he listened. On the other hand, Guo Zhenglin around him was listening and recorded some content from time to time.

This made Xie Jin feel a blow. After all, he has been called a child prodigy since childhood. No matter what his husband said, he can get one and three. This has never happened today. This has also made him doubt himself. Is he not as smart as he imagined?

Just when Xie Jin was trapped in self-doubt, two more walked into the classroom lightly. It was Li Jie and Zhu Yunxiu who came late. Because they discussed going to sea with Zhu Yuanzhang, they delayed a little time. He also saw Xie Jin who was bowing his head and pondering at a glance, which made Li Jie smile slightly: Xie Jin finally didn't disappoint himself!
Chapter completed!