Shanyang County's action to pursue and suppress the rout soon ended, at the end of November of the fifth year of Jian'an, Cao Pi took the children of the god envoy camp to embark on a journey back to Xudu, the biggest harvest of the trip to Shanyang County is no longer to collect nearly 2,000 people, but to get Liu Hong and Xu Yue are willing to return to Taixue to do a doctorate in teaching, followed by getting Gongsun Xu, a son who is familiar with the north, and now Yuan Shao has returned to Yecheng, Jizhou, Cao Cao will not let go of him who is greatly injured, at this time, The role of Gongsun Xu is particularly obvious. Pen & Fun & Pavilion www.biquge.info

Cao Pi put his harvest in Shanyang County in the reported military situation, on his way into the territory of Yuzhou, Gongsun Xu's deceased father Gongsun Zan has been posthumously presented as a general of the chariot cavalry, from the original Ji Hou to the right Beiping Marquis, 1500 households, because of his death, so his son Gongsun continued to inherit the title, in addition to Gongsun Xu was also named Changshui Lieutenant, originally this position was returned to the old ministers of the royalist party of the east, but the three clans of the seed series went with Dong Cheng, just gave the position of the two thousand stone members to Gongsun Xu.

As for Liu Hong and Xu Yue, they were also given, Liu Hong served as the doctor in charge of teaching the doctor in Taixue, and Xu Yue recognized the doctor and belonged to Yang Biao of Taichang. Although there are only two of them in Taixue now, it has made many children who have no way to invite a chair in Xu Du like the son of the Cao family burst out with enthusiasm for reading, these children have more or less learned a little scripture at home, but the family is not the four major families of Yingchuan and the Hongnong Yang family, so they can hear a little more knowledge, that is an opportunity that they can cherish.

Liu Hong and Xu Yue returned to Xudu a few days earlier than Cao Pi, because they were invited back by the carriages sent by those children who wanted to attend the class, while Cao Pi came back from a slow journey through the state and county without stopping, and the speed was naturally different.

As soon as the two masters of mathematics returned to Taixue, the originally empty Taixue instantly had more than 200 Taixue students, all of whom were some officials of the court and China, the children of the Xu Duwang clan, and even the young children of the four major families of Yingchuan would also go in to listen to the class, after all, if the people of their family were more than the "Book of Changes", they were far inferior to Liu and Xu.

When Cao Pi returned to Xudu, Taixue Yijing became more than 400 students, Cao Pi took time to visit Liu Hong, the old gentleman was very busy, but he was full of red light, happy, it turned out that Cao Pi thought that it was because Liu Hong, a person who is good at learning, is good at being a teacher, when Liu Hong asked the attendant to take out a wooden abacus, Cao Pi knew that he had guessed wrong.

I saw Liu Hong gently stroking the wooden abacus on the table, and said with satisfaction: "This thing was made ten days ago, and after the little old man was shown in front of the students, he immediately asked them to use the calculation chip to compare the speed with the old decay, but these boys were defeated one by one, but they were not convinced, and insisted that the old decay used this thing on the surface, in fact, it was mental calculation, so the old decay found a few more intelligent students, pointed them out, and asked them to compare with each other. But it's still faster than those students who use calculations, and as a result, these students have to teach this method to the old age, and some people draw it on Zuo Bo paper to go home and make one, hahaha, as long as you have this thing in your hand in the future, you can count the number of money, grain, and goods in the world! ”

Cao Pi smiled: "Make the best use of things, just like that." ”

Liu Hong waved his hand again and again and said, "Childe's words are ridiculous! This thing is painted by the son, and the little old man is just taking advantage of the situation, and he is not capable, and he is not capable. ”

Cao Pi smiled: "It's just a drawing, this algorithm was created by two gentlemen, I don't dare to take credit." ”

Liu Hong laughed: "No matter how humble the son is, the old man has already told the Tai student that this thing was created by the child..."

Cao Pi immediately recalled that when he rode his horse down the street, the fur-clad boys looked at him with admiration, and even when some carriages passed by him, the curtain of the carriage window would lift a corner, and behind that lifted corner, there would often be a pair of bright or charming eyes staring at him. Originally, Cao Pi thought it was because of hybrid rice, but now it seems that it should be because of this thing.

But I heard Liu Hong continue: "Childe came just in time today, why don't you give this thing a name?" When the student asked the old man the name of this thing, the old man said that this thing was made by Gongzi, and it had not yet been named, so it was necessary to wait for Gongzi to return to Xu Du. ”

Cao Pi knew that he should be in charge at this time, and then said: "Many people in Xu Ducheng know that I am good at the way of the game, this thing has beads on the outside and inside, the chessboard is also square, and the chess pieces are also round like the beads, since this thing is used for arithmetic, it is called an abacus." ”

This explanation Cao Pi felt that it was far-fetched, but it was in line with the characteristics of his proficiency in chess, since Liu Hong asked Cao Pi to name him, he would accept whatever the name, and even asked Cao Pi, why not name it after himself? Cao Pi waved his hand again and again, laughing that this move was inappropriate. Then he got up and took his leave.

When Cao Pi came out of Taixue, the students who were teaching discovered him, and they turned their heads to see, whispering, most of which were beautiful words.

After leaving the Taixue Mansion, Dian Man, who was waiting outside the door, stepped forward and said: "Childe, now the city is full of nobles and lows, and everyone knows the name of Childe!" Many readers say that Childe has drawn an arithmetic device that is better than the arithmetic chip, and I wonder if Childe can teach that method to the servant? Picking up more and more goods from the Chen family's shop is really laborious. The servants in the family are not good at arithmetic, and they are really sad to death. ”

Cao Pi smiled and said with a smile: "If you want to learn, you can take the time to go to Taixue to listen to the lectures, if you don't understand, write it down and come back and ask me, to be honest, this thing is right that I drew it, but how to use it is indeed set by Mr. Xu of Yuan Zhuo Gonghe, it has nothing to do with me, but I can't teach it, but it's okay to solve your doubts." ”

Dian Man was overjoyed when he heard this, and immediately agreed, leading Cao Pi's horse to Cao's mansion, at this time a carriage galloped behind, the carriage window did not have a curtain, and there were no beautiful eyes inside, but Guo Jia's pale face, Cao Pi was stunned when he saw Guo Jia, you must know that now Cao Cao is still near Guandu to accept the materials and soldiers left by Yuan Shao, and has not yet returned to Xudu, but Guo Jia, who went with Cao Cao, appeared in Xudu It is really a bit unreasonable.

Guo Jia saw Cao Pi's doubts, and said with a smile: "I went back to Xu Du because of the son, Sikong thought that the child's mind had matured, and he would be fourteen years old after this year, although the Cao family's crown ceremony was mostly fifteen years old, but the son was not an ordinary child, it was Sikong who decided to give the son a crown gift next year, and I came back to prepare the crown ceremony for the son." ”