"Why is Your Highness the King of Qin coming?" Li Xiu couldn't help but say in surprise when he saw Li Shimin standing in the yard. Not far away, Li Chengdao and Li Chengqian were playing games with Qi Niang and others. When he came in just now, Li Shimin was watching it, and he turned his head and saw him until he spoke.

"Haha, I'm free, so I'll send Chengqian to your class. How about it? I won't disturb you, right?" To Li Xiu's surprise, Li Shimin actually smiled peacefully. For some reason, Li Xiu always felt that Li Shimin now seemed a little different.

"I heard that the Turks were going south, why did your highness have nothing to do?" Li Xiu looked at the child playing next to him, and then asked. He didn't want to ask this in front of Li Shimin, but he was really curious about why Li Shimin came to him at this time, so he couldn't help but speak.

When he heard Li Xiu's question, Li Shimin suddenly breathed a sigh of relief, and then said with a relaxed expression: "This matter has nothing to do with me. Yesterday afternoon, my father had appointed the fourth brother to lead the troops to fight, and I have handed over the military power. However, in my estimate, the Turks are just acting. In such cold weather, heavy snow may be blocked at any time. They dare not go south at will!"

"You... did you really hand over the military power?" Li Xiu couldn't help but ask in surprise when he heard this. Yesterday, after hearing Ma's talk about this, he always felt that Li Shimin would definitely fight desperately, at least he would never hand over the military power easily. However, he didn't expect that in just one night, Li Shimin actually handed over the military power so easily.

"So what if I don't want to hand over? Can I really disobey my father's order?" At this time, Li Shimin showed a faint smile and said, but there seemed to be endless bitterness behind this smile.

"This..." Li Xiu was speechless when he heard this. Indeed, facing the joint suppression of Li Yuan and Li Jiancheng, even the Turks from the outside were cooperating with Li Yuan in acting. No matter how capable Li Shimin was, he might not be able to stop him. If it were Li Xiu, he would have surrendered and admitted defeat long ago. It was just that the reason was that, but the other party was Li Shimin after all. In Li Xiu's opinion, he shouldn't have given up so easily?

"Sir, are we going to start class now?" At this moment, I suddenly saw Li Chengdao next to me shouting loudly. Among the few children, he was the most active in studying. Sometimes, Li Xiu forgot to leave homework, he would take the initiative to remind him, and for this, he often asked Qi Niang and Li Chengqian to scold him for pretending to be active.

"Oh, let's go to class now!" Li Xiu finally woke up and said, then nodded to Li Shimin, preparing to take a few children to the living room for class. However, at this moment, Li Shimin suddenly spoke, "Brother Li, I wonder if I can listen to your class?"

"Uh? King Qin, you really have nothing to do?" Li Xiu was really surprised at this time. Even if he handed over the military power, Li Shimin would not be bored to come and listen to his lectures to several children, right?

"Whatever I do now is wrong. Maybe I will lose some of the things I'm going to do in the future. It's better not to do anything. Moreover, I heard Cheng Qian say about what you said, and I'm also very interested in some of them. I didn't have time before, but now I have the opportunity to study hard!" Li Shimin smiled again, and the smile on his face was very calm, as if he really thought so.

"This...of course there is no problem!" Li Xiu hesitated and nodded. Li Shimin is the parent of his student, and it seems normal for parents to attend classes, so he has no reason to refuse.

The weather was very cold, and Li Xiu could only teach in the living room. There were coal stoves built in all corners, and air channels were connected to the outside. When winter came, honeycomb coal was occupied and the room became very warm. Five students were divided into three groups. Li Xiu first gave Hener a lecture. She has now started to learn more complicated four-character operations, and she can read and write smoothly, which is a rapid progress.

Then there were Xiaoya and Li Chengqian. The things they learned were not much better than Hener, and they mainly had some math training. However, even so, Li Shimin next to him was still very surprised because he found that he had to struggle to calculate some questions.

Finally, Li Xiu gave lectures to Qi Niang and Li Chengdao. The courses they learned were closest and most difficult, and they were no longer limited to basic mathematics, but involved other subjects such as chemistry and physics. For example, Li Xiu was talking about the calculation of gravity today. He had already talked about the section on universal gravity, so Li Chengdao and Qi Niang listened very seriously, but Li Shimin next to him was confused and couldn't understand what he was talking about at all.

After finishing the course, it was almost noon. Li Xiu announced that the get out of class would be over and asked a few children to go out for activities. Yuechan would deliver lunch next time. Taking advantage of this opportunity, Li Shimin finally asked: "Brother Li, what did you talk about in the last section just now? Why can't I understand at all?"

"This..." Li Xiu didn't know how to explain it when he heard this. Because it was strange that Li Shimin could understand it without the previous foundation, so he had to say helplessly, "Your Highness, what the King of Qin just told Qi Niang and the others involved a lot of other aspects of knowledge. If you want to understand it, you must have the previous foundation, so it is normal that you don't understand it!"

"Can you please tell me the previous knowledge? I believe that with my understanding ability, I should learn it quickly!" Li Shimin said at this time with a look of courage to stop until he achieves his goal. He has always been very conceited and has never encountered such a situation before, especially since he can understand both children, but he, an adult, cannot understand it.

"This... OK." Li Xiu had no choice but to briefly explain the knowledge related to gravity. As a result, Li Shimin could understand it at first, but later he began to interrupt Li Xiu's questions frequently. At the end of the talk, he had completely given up asking questions because some things were really not something he could understand, especially the calculations in it. He didn't understand where those physical constants came from?

Seeing Li Shimin's confused expression, Li Xiu couldn't help but feel a little sympathetic. Yesterday he was just hit by his father and brother in politics, but now he has been hit by his IQ once, especially Li Chengdao is also Li Jiancheng's son. He can learn it but cannot learn it, which probably makes him even more unacceptable.

"It's really complicated, but are these really useful?" Li Shimin sat there and was stunned for a long time, and finally suddenly woke up and asked.

"These are theoretical knowledge. On the surface, it seems that there is no use in many ways, but if it can be applied to practical problems, they will find their role!" Li Xiu said with a smile.

"Can you give an example, for example, the calculation of gravity just now, why do I feel that it is useless?" Li Shimin asked unwillingly. He is very injured now, and even his self-confidence has been hit, so he must understand this.

"The calculation of gravity is actually very useful. For example, in terms of military matters that Your Highness is best at, when the army attacks the city, it usually uses a stone throwing machine. If the stone throwing machine throws the stone and hits the target, it will draw a parabola in the air. The trajectory of this parabola is most affected by gravity. If we can calculate it in advance, we can hit the target more accurately. This Qin King should be understandable, right?" Li Xiu said with a smile again.

"Stone thrower? Parabola?" After hearing this, Li Shimin carefully pondered the truth in Li Xiu's words, and finally nodded, "So that's it. Not only the stone thrower, but giant crossbows also have this problem. They are only less affected by gravity. In the past, they could only rely on experienced soldiers to judge. Now, after hearing what you said, if you calculate in advance, general soldiers can also operate crossbows. Unfortunately, there are too few soldiers in the army who are literate, let alone such complex calculations."

"That's right, His Highness Qin's last words did come to the point. The literacy rate of our Tang Dynasty was too low, and one of them could not be found in the ten. So I think if the court stabilized and solved the threat of food and clothing and external factors, the first priority was to promote education. As the saying goes, education is a century-old plan. Although it cannot be seen at the moment, after one or two generations, the effect of education will be truly revealed!" Li Xiu said again at this time.

Li Shimin nodded in agreement with Li Xiu's words. In the past, he only thought that education was to cultivate scholars, and then select a group of officials from scholars to manage the people in the world. However, Li Xiu's words woke him up. Education is not only aimed at traditional scholars, but also to allow ordinary people to read and write. When they master certain knowledge, they may burst out with different power?

However, when thinking about the above, Li Shimin suddenly smiled bitterly and shook his head. He was almost unable to protect himself now, so how could he still have time to think about these major national affairs?

At noon, Li Shimin still refused to leave. In desperation, Li Xiu had to have a meal with him, and then Li Shimin continued to listen to the class in the afternoon. He couldn't understand the class between Qi Niang and Li Chengdao, so he went to the class between Li Chengqian and Xiaoya. Although their class was relatively simple, when Li Shimin studied it seriously, he found many things that he had not noticed before.

It was finally late, and Li Shimin took Li Chengqian away. Li Chengdao originally wanted to leave together, but was stopped by the guard leader he brought. After Li Shimin and his son left, the guard leader took Li Chengdao away. This made Li Chengdao turn around and smile bitterly at Li Xiu. He naturally understood the reason, but he couldn't even believe his own uncle. It was really sad to think about it.

Li Xiu originally thought that Li Shimin came to him occasionally because he was in a bad mood. But what he never expected was that in the next few days, Li Shimin had almost gone all day long. Every time he sent Li Chengqian to school, even if Li Chengdao did not come, the father and son were still in a storm. And every time Li Xiu gave a lecture, Li Shimin would sit by the side and listen, and he actually worked harder than a few children.

That day, Li Xiu had just sent Li Shimin and his son away. He had just returned to the living room to sit down and prepared to drink tea to moisten his throat. At this time, Ma Ye rushed in and said loudly: "You guy is a problem. Now the King of Qin has become a rat crossing the street. No one dares to get too close to him. You actually asked him to come to your house every day?"

"Uncle Ma, please calm down first. I also know that the King of Qin is not popular now, but he comes every day in the name of sending his son to study. I can't drive him out, right?" Li Xiu also said helplessly at this time. Then he was a little curious and asked again, "By the way, Uncle Ma, how is it in the court now? Has the King of Qin really given up his military power?"

Ma Ye sat on the chair next to Li Xiu, drank a few sips of tea, and then showed a disgusting expression. Even now he still didn't like to stir-fry tea. Then he spoke: "The King of Qin doesn't know what he thought this time, but he handed over military power so easily. Now the King of Qi has mobilized most of the generals of the Tiance Prefecture, saying that he was going north to resist the Turks, but I guess these people will be transferred to various places for various reasons after going to the northern border. Now there are not many people around the King of Qin."

When he said this, Ma Ye paused for a moment before continuing: "As for the reaction in the court, everyone was shocked at the beginning, and even the prince couldn't believe it. However, after the King of Qi transferred a large number of generals of the Tiance Mansion, the people in the court believed that the King of Qin had really given up his military power. Moreover, everyone's eyes were staring at the King of Qin these days, but he actually ran away to you every day, and you idiot didn't know how to drive him out. What if the prince wants to settle your account in the future?"

When Ma Ye said it the last time, he couldn't help but glared at Li Xiu again. Of course, he said that these were all for Li Xiu's good luck.

"The prince is not a stingy person. If he doesn't even have such a strong aura, how can he become an emperor in the future?" Li Xiu smiled without caring.

"You are not the prince, how do you know that he is not stingy? And there is no personal feelings to talk about in the battle for the throne. Everything is based on interests. If he really wants to liquidate the King of Qin in the future, you will definitely be unlucky. So I asked me to tell you, you might as well drive Li Shimin's son out now, so there is no reason for Li Shimin to come to you!" Master Ma glared again when he heard Li Xiu's words. He always liked to think about the worst, and always put the interests of the people around him first. As for the life and death of others, he would not consider it.

"Thank you for your kindness, but I have a sense of my own attitude towards this matter!" Li Xiu also knew that Ma was for his own good, but he would never be able to do such a thing, so he could only politely decline. However, when he said this, he suddenly thought of someone, and suddenly looked up and said, "Uncle Ma, ask you something, do you know what Changsun Wuji reacted to the King of Qin's handover of military power?" (To be continued.)
Chapter completed!