"Why did Your Highness say goodbye? Didn't you say that you were dormant in Luoyang and waiting for an opportunity to sneak back to Youzhou?" In an inn, Zhang Da, who had just stayed in the inn and ran with Sima Ji for several days, finally asked about the doubts in his heart. I wonder why the King of Yan, who had always made up his mind to stay in Luoyang, suddenly traveled eastward? Is it ready to attack Goguryeo?

"You don't understand. I saw a book and decided to travel east to Qingzhou!" In fact, it was not. Sima Ji just took the time and felt that the battle in Hetao was coming to an end. It happened that he saw a book in Chongwenguan some time ago, and he suddenly decided to change his clothes and go east with his confidant guards, and his destination was not Youzhou.

All the books in the world are in Luoyang. Sima Ji also dived into Chongwen Temple for the development of Youzhou and selected books that he seemed useful until he saw Jiuzhang Arithmetic. What attracted him was not Jiuzhang Arithmetic itself, but the annotations next to him. After reading these annotations from beginning to end, he decided to change his original plan and leave Luoyang early.

Then he entered the inner palace and had a deep conversation with Jia Nanfeng, indicating that he was about to leave Luoyang and go to Qingzhou. Of course, before leaving, Sima Ji did not forget to separate the treasures and weapons of the arsenal in front of several ministers of the regent, and the prisoners of the Battle of Hetao could be used to build a real treasure house.

Then he asked for an order from Jia Nanfeng and got the will to fight back against Goguryeo. This level was inevitable. The centralization of the Jin Dynasty was not strong, but it was an empire at least, and forging an edict was a very serious matter. The example of King Sima Wei of Chu was in front of that. King Yan would not put himself in for Goguryeo.

Anyway, Luoyang is really nothing to be alone. Although Sima Ji is not a military genius, he can also see that the advancement speed of the two royal families in Hejian and Fanyang is not fast, and it can even be said to be very slow. There is basically no possibility of ambush. The decisive battle may take place within one month. As for crossing the Yellow River to occupy the important Wuyuan and Shuofang cities, it may take more time.

The Jin Dynasty royal family led troops, and it was impossible for all the royal families to be unable to fight. King Hejian was quite capable of fighting in the Eight Kings Rebellion. King Fan Yang did not intervene too much in the political struggle, but he could also find records of leading troops to fight. On the contrary, Sima Yue, the last winner, led troops to fight, but the group of royal families were not as good as those who could fight. Later facts proved that it was better to live longer than those who could fight.

If we follow the current trend little by little, the chances of the Jin army being defeated are almost no.

Even if the boat capsizes in the gutter, it depends on the situation. If two royal families who are highly anticipated die, then the matter will be big. Hetao is not Zhanzhou. If Sima Ji died in Zhanzhou, someone might not avenge him. But if two important royal families in Hetao were killed under his nose, the Jin Dynasty would not only not settle the matter, but also mobilize more troops to make a comeback. Maybe Sima Ji would be the one who avenged the two.

When entering Qingzhou, Sima Ji did not show up, but asked Zhang Da to enter the Qingzhou Governor's Mansion with his seal to meet the current Qingzhou Governor Shan Jian. He is Shan Tao's son, and the sons of the Seven Sages of the Zhulin are all very famous, among which Shan Jian is the best among the second generation.

"I don't know why the emperor came to Qingzhou and heard that the world was going to Luoyang, why did he come back?" When he saw Sima Ji, Shan Jian quickly greeted him because the other party lifted the hooded cloak, his characteristics were too obvious.

"I want to sneak back to Youzhou. This is a secret. Except for the queen and several auxiliary ministers, there are very few people who know it!" Sima Ji entered the inner hall while talking. After sitting down, he spoke directly, "It's not to be hiding it. I actually came to Qingzhou to find someone, otherwise I would go back to Youzhou directly."

Sima Ji asked for it, and Shan Jian was very surprised. He didn't know who could have a prince come to him personally. Could it be a great talent? But in fact, it was not only not a great talent, but an old man who did not meet the standards of great talent in the Jin Dynasty at all. In fact, this person did not meet the standards of great talent in Confucianism.

"Liu Hui? Is this person? Leave this matter to me!" Unexpectedly, Shan Jian actually knew this person and knew where this person was. "But he is already very old, and it may take some time to invite him here. Your Highness can be a guest in the mansion and take a few days to climb."

"Since it's an old man, don't let him come. This dynasty governs the world with filial piety. I will go to see him in person at that time." Sima Ji hesitated for a moment and suddenly spoke. This person is worth seeing him, and is more worthy than a famous scholar like Shi Chong and Wang Rong.

After staying in Shan Jian's mansion for a few days, when the news came, Sima Ji left the governor's mansion with the escort of the royal palace. He actually felt a stir in his heart. So far, he had seen a large number of well-known people in history, but this was the first time he felt this.

When he really came to Liu Hui's residence, Sima Ji frowned slightly. This was not a place of wealth. Although he was not as poor as ordinary farmers, he could not be said to be rich. Liu Hui himself was not a famous scholar. If Sima Ji had not accidentally seen the annotation of Jiuzhang Arithmetic, he would not have thought of who Liu Hui was.

"It's Your Highness, King Yan, I'm polite!" Liu Hui is now nearly seventy years old, with a head of white hair, and the degree of retraction of his hairline, if it weren't for Sima Jier reading the meridian, he would have thought it was my Qing Dynasty.

But even so, after seeing the ceremony, Liu Hui still tried his best to straighten his back and maintain his demeanor. If we look at it just by looking at it, Sima Ji almost felt that the other party was a gentleman.

"The old man doesn't have to be too polite, can you go into the house to talk?" Sima Ji gave a solemn greeting, which has never been before.

One of the important reasons why the King of Yan was not famous was that he rarely cared about etiquette. However, this was the view of those gentry. As the guards of the royal palace, they certainly didn't think so, because when the wise king Sima Ji was alive, Sima Ji, who was still the crown prince, was very good at it.

"The old man's house is simple, don't blame the King of Yan." Liu Hui slowly turned around and made a gesture of inviting him.

Sima Ji was not polite and went straight into the house, leaving a guard to guard outside. The house was indeed as Liu Hui said, but it was quite clean. It was much better than ordinary families, but it was incomparable to the aristocratic family.

"I have seen the annotations of Jiuzhe Arithmetic and deeply admired it." Sima Ji sat directly on the ground, facing Liu Hui face to face, and looked at Jiuzhe Arithmetic in Chongwenguan, Luoyang, and then asked who the annotations were. Then he explained the ins and outs of Qingzhou.

"The king praised it, Liu Hui is already an old man." Seeing Sima Ji searching for the annotation of Nine Chapters of Arithmetic, Liu Hui, who was nearly 70 years old, suddenly lit up, but immediately dimmed, and said with a wry smile, "This is just some of the old tricks, which cannot be regarded as true in the eyes of Dacai."

These words and expressions made Sima Ji feel a little depressed and said, "Sir, don't be sad. Some people are not necessarily understood in the era they were in at that time. But history will remember his name."

In his spare time, Sima Ji also read the Three Kingdoms novels and heard about all kinds of civil and military officials in it. However, none of the Three Kingdoms novels he had read had Liu Wei. He could not even remember that there was such a person living in the era when he appeared. If it weren't for the Nine Chapters of Arithmetic in Luoyang this time and read the annotations again, Liu Wei, a well-known historical mathematician, might not even remember that he would have died of old age.

In history textbooks, Liu Wei's reputation is not as great as Zu Chong. However, based on the annotations he saw, Sima Ji concluded that Liu Hui should be the strongest mathematician in ancient China. Mathematics needs to be proved. Knowing that Pythagorean theorem is useless, how to prove the Pythagorean theorem is the real ability. Compared with those big giants in geometry in ancient Greece, there are too few other civilizations who clearly advocate the use of logical reasoning to prove mathematical propositions, and Liu Hui is one of them.

In China's thousands of years of history, there are very few people like Liu Wei, and there are not many mathematicians like ancient Greece. After the destruction of ancient Greece, the natural science theories established by ancient Greek mathematicians were already very complete.

"I wonder if sir has a young master?" Sima Ji asked, "I wonder how good Mr. Ling is in mathematics?"

"He is more interested in doing business, not in mathematics." Liu Wei shook his head slightly and could not be disappointed or disappointed. He could not demand too much of his son, and he would be as willing to be as poor as himself for the rest of his life.

"There are still too few people like the old man!" Sima Ji sighed. He knew that he was thinking too much. There were almost no heroes in the subjects of mathematics. So Liu Hui could not blame him for not teaching his son well, but he still asked unwillingly, "Sir, do you still know like-minded people?"

"It turns out that I have a friend who we have never seen before, but has been in harmony with God for a long time. His name is Wang Fan, I am from Wu, but he has been killed by Master Sun Hao of Wu." Liu Wei shook his head slightly and said, "What's the use of studying these things? Others just think we are aliens, and the craftsmanship cannot enter the elegant hall. If you want to settle down and the court, who cares what people like us are exploring?"

"In fact, the world is so big, there must be people like Mr. I heard that in the west of the Western Regions, there are many like-minded people in a country that go 20,000 miles west." Sima Ji sighed and comforted, "Mr. is not alone."
Chapter completed!