In Princess Lin'an's mansion, coffins were carried onto the carriage. Li Jie stood by his father with his father. Since returning to Beijing, he has been here for a while, helping his father and Li Qi and his wife to take care of the funeral of the Li clan.

"Father, mother, you should take care of yourself along the way!" After all the coffins were carried onto the carriage, Li Jie went forward and bid farewell to Li Zhu and his wife.

After several days of discussion, Li Zhu and Li Qi decided to send Li Shanchang and others back to their hometown in Haozhou for burial. However, Li Qi is now restricted in movement and will be placed in Jiangpu immediately, so Li Zhu can only escort the bodies of these family members back to their hometown. Mrs. Li was worried about her husband, so she decided to go back with him.

"Jie'er, you are in the capital, so you should pay more attention to your side!" Mrs. Li held Li Jie's hand and said reluctantly. This time, not only did she want to leave, but even Aunt Zhao and Di'er would go back to their hometowns, so Li Jie was the only one left in the capital. Although Liu Ying and his son were taken care of, she was still worried.

"Don't worry, Mother, I'm not a child anymore, so there will definitely be no trouble!" Li Jie comforted with a smile.

"Jie'er, your fifth uncle is going to Jiangpu, not far from the capital. If you have time, you can go to his place more often!" Li Zhu also sighed and said.

Li Qi is the legitimate son of Li Shanchang and married Princess Lin'an. Although he saved his life because of Princess Lin'an this time, he was demoted to Jiangpu County. Without Zhu Yuanzhang's consent, he even had difficulty going out, which was actually similar to house arrest.

"I know, don't worry, father!" Li Jie nodded solemnly. Li Zhu had also resigned from the position of Military Weapons Bureau. After all, there was such a big change at home, so he had no intention of becoming an official.

Looking at Li Jie, who was already taller than him, Li Zhu also lamented that his son had really grown up. He reached out and patted his shoulder, but said nothing more.

At this time, Li Qi and his wife also came over. They were packing their things and were about to move to Jiangpu County later. If nothing unexpected happens, they will never have the chance to set foot in the capital again, which made the couple feel depressed.

Li Zhu and Mrs. Li could also understand the mood of Li Qi and his wife, so they stepped forward and comforted them quietly for a long time. Finally, they set off and left. Li Jie and Li Qi and his wife sent them out of the city. Until the long line disappeared on the official road, Li Jie then accompanied Li Qi and his wife back to the princess's mansion, and then Li Jie sent them out of the city to Jiangpu.

After finishing all the work, Li Jie felt exhausted. When he returned home, he looked at the empty home and felt a little lonely. This made him think of Zhu Yuning, and he didn't know when Lao Zhu let them get married?

The next morning, before Li Jie got up, he heard someone calling outside. He was wearing clothes to open the door, but unexpectedly found that there were Yuan Jianzheng, Ma Hama and Guo Zhenglin outside the door.

"Why are you here? Please come in quickly!" Li Jie was surprised when he saw Yuan Jianzheng and the other two, and then he suddenly remembered that Zhu Yunxi had told him that Yuan Jianzheng and the others had something to do with him, but he had been busy with family affairs these days and had no time to ask them for questions.

"Brother Li, we came here this time but we had something to ask for help!" Yuan Jianzheng saluted Li Jie solemnly. They had actually wanted to see Li Jie for a long time, but they knew that such a big change had happened in Li Jie's family and they definitely had no time to see them, so they waited until today.

"What's the matter?" Li Jie was also stunned. Speaking of which, the four of them had lived and died together once. Later, because the hot air balloons often communicated, they had already become very familiar with each other. Now that Yuan Jian was talking to him solemnly, Li Jie felt a little surprised.

"Brother Li, the new mathematics that Prince Guangze taught to officials of the Ministry of Revenue. I heard that you taught him?" Before Yuan Jianzheng could answer, the youngest Guo Zhenglin also asked first.

"So this is what you came here!" Li Jie immediately guessed their purpose when he heard this.

Introducing various operational symbols into mathematics is definitely a major innovation in the mathematics community. Li Jie only taught Zhu Yunyu some basic symbolic mathematical principles, but now it has been spread through the Ministry of Revenue. Astronomy has always been closely related to mathematics. Almost all people who are proficient in astronomy have profound attainments in mathematics, so it is normal for Yuan Jianzheng and others to be attracted to it.

"To be honest with Brother Li, after we saw the new mathematics you taught, we were all amazing. Not only did we greatly simplify our calculation process, but we also found a solution."

When Yuan Jianzheng said this, he suddenly paused, and then he looked a little embarrassed and said again: "But this new algorithm is too magical. We can only do some superficial applications. There are many problems that need to be asked by Brother Li!"

Li Jie was not surprised when he heard this. What he taught Zhu Yunyu was the most basic application of semiotic mathematics. There was a fixed algorithm on the Ministry of Revenue, so it could be used directly by substituting mathematical symbols. However, Yuan Jianzheng and others needed to use many pioneering operations, which required great proficiency in mathematical mathematics, so he wanted to ask Li Jie to teach more semiotic mathematics.

"This is fine. I will go to the Zhanshi Mansion in two days and will accompany His Royal Highness to the palace to accompany His Royal Highness out of the palace and tell him some calculations. If you are interested, you can also listen!" Li Jie agreed with a smile.

"That's great!" Seeing Li Jie agreeing, Yuan Jianzheng and the other three also showed an excited look, but then Yuan Jianzheng showed a hint of embarrassment. After hesitating for a moment, he said again, "Brother Li, there are many people who are interested in new mathematics in our Imperial Heaven Supervision, so many people may want to listen to your lectures at that time."

"This is easy to deal with. If there are many people, I might as well do a class. In addition to calculation, I also have some insights on astronomy and geography. We can discuss it together at that time!" Li Jie nodded again.

Although the Imperial Heaven Supervision is a clear water yamen, it is one of the closest departments in ancient dynasties to science. Most of the officials in it are technical officials, and Li Jie has long wanted to communicate with these people.

Seeing Li Jie agreeing so happily, Yuan Jianzheng and the other two were both surprised and admired, because most of them had a private idea of ​​keeping their knowledge privately. Many of them were passed down from father to son, such as Yuan Jianzheng and Guo Zhenglin, so they were reluctant to spread their knowledge, but Li Jie's approach was completely opposite to them.

Li Jie and Yuan Jianzheng had not seen each other for a long time, and they were rarely together today, so Li Jie simply took the initiative and invited them to a restaurant to have a small gathering. Yuan Jianzheng and the other two were reluctant to ask for it, so the four of them went out together.

However, before Li Jie could lock the door, a team of guards rushed over, and then an internal message came forward and said, "Li Bandu, Your Majesty urgently summoned him and said that someone from Ningbo Prefecture has come. Let you go and greet him for your Majesty!"

"Zhang Dingbian is here!" Li Jie couldn't help but feel happy when he heard this. Although he had known that the other party would come, he was still very happy to hear the news.

"Brother Li, since Your Majesty is destined, we won't disturb you. Let's get together again the next day!" Yuan Jianzheng said very tactfully at this time, and Mahama and Guo Zhenglin also bowed to him.

Li Jie was not polite either. After saying goodbye to Yuan Jianzheng and the other two, he immediately rushed to the direction of the city gate with the imperial guards. When he arrived at the city gate, he did not wait long, he soon saw a bald old monk coming on foot, followed by eight disciples, which was Zhang Dingbian.

"Master Mu Lecture, you are really here!" Li Jie immediately went forward excitedly when he saw Zhang Dingbian.

"It's important, of course I can't stop coming, but does your emperor really want to see me?" Zhang Dingbian smiled slightly at Li Jie, and then asked.

In fact, before Zhang Dingbian came, Zou Pusheng and Li Hong also advised him to think twice, worried that Zhu Yuanzhang would be unfavorable to him, but Zhang Dingbian didn't care. First, if Zhu Yuanzhang really wanted to kill him, he would not use such a method at all. Second, Li Jie's letter also made it clear that Zhu Yuanzhang was willing to give more favorable conditions, but he needed to discuss it in person, which Zhang Dingbian could not refuse.

"That's natural. Your Majesty is waiting in the palace!" Li Jie said and asked Zhang Ding to get on the carriage. He had already found out from the eunuch who reported the news that Zhu Yuanzhang had specially held a banquet in the palace and waited for him to go to the banquet.

Zhang Dingbian did not hesitate at all and directly boarded the carriage. Then the group passed through the capital and finally entered the imperial city. However, Zhang Dingbian's eight disciples were stopped when entering the imperial city. Zhang Dingbian asked them to wait at the city gate, and then followed Li Jie through the numerous palaces and came outside the Donghunting Pavilion.

But what Li Jie didn't expect was that Zhu Biao was standing outside the door. When he saw them, he immediately stepped forward and performed a Buddhist ritual to Zhang Dingbian: "The master came from afar, and his father had already held a banquet in the pavilion to welcome the master!"

Zhang Dingbian didn't know Zhu Biao. After Li Jie quietly introduced Zhu Biao's identity to him, he looked at Zhu Biao in surprise and then said politely: "Your Highness, you are polite. I have not seen you for many years and I miss you quite a lot. I also ask the prince to guide the old monk!"

"Please come from the master!" Zhu Biao smiled slightly, and then personally led the other party into the warm pavilion.

Li Jie wanted to follow him in, but he didn't expect that he was stopped by Zhu Biao and said, "Don't go in, my father said that no one except Master Mu Leung is allowed to go in, so you just wait outside the door!"

"So mysterious?" Li Jie was speechless when he heard this. He brought Zhang Dingbian, but he did not let him in when he arrived at the door. Could it be that Lao Zhu and Zhang Dingbian have any shameful words to talk about?
Chapter completed!