"Chong'er, come on, come on." Guo Jia waved to Cao Chong, and Cao Chong immediately ran over obediently. Guo Jia patted Cao Chong¡¯s head appreciatively. Compared to Cao Zhi, Cao Chong was indeed better. When it comes to smartness, Cao Chong is definitely no worse than Cao Zhi, or even worse. Obedient, sensible, well-behaved, smart, and also pretty and very cute. To use a modern phrase to describe it - if it is so cute, it must be a boy. What a pity, Cao Chong is a cute little young lady. It would be great if she was a little loli, cough cough cough. In short, because of Cao Xi, Cao Chong often likes to run to the Guo Mansion since he was a child. It can be said that Guo Jia has grown up little by little, and he is definitely familiar with it. Among Cao's many sons, the one closest to Guo Jia is definitely Cao Chong, and Guo Jia also likes this little Cao Chong the most. You must know that both Cao Pi and Cao Zhi are the elders who inherited their fathers. Only Cao Chong, who is still young and obedient, reassures Guo Jia. At least they have no "criminal record" in their history, right? Since Cao Zhi has passed, it is better to train Cao Chong from a young age, so that he can be considered himself after all, right? Moreover, he is young and has strong talents. If Cao Chong can be cultivated into a character like Zhao Yun, who respects his teachers and respects his teachings, then Guo Jia will definitely rest assured in the future. Cao Chong looked up at Guo Jia, his delicate face was flushed, and he looked cute. For a moment, Guo Jia almost fell into the original rumor. Damn it, there really isn¡¯t much difference between a pretty young lady and a pretty little loli. But then, Guo Jia was instantly pulled back to reality. "Master!" Little Shota Cao Chong shouted crisply. The voice was nice and the content was normal, but to Guo Jia's ears, it seemed a little weird. Chong'er? Master? What a familiar word. What do people usually think of subconsciously when they hear this title? That's right! Linghu Chong and his master Yue Buqun! Good guy, Yue Buqun finally practiced the swordsmanship to ward off evil spirits. It would be unlucky to have his vagina cut off in the palace. So Guo Jia hurriedly said, "You won't be called Chong'er anymore." "Huh?" Cao Chong was stunned. How could he change his name on the spur of the moment? Moreover, even if you, Guo Jia, are Cao Chong's master, you can't change his name. Guo Jia also realized that what he said was wrong, and said instead, "I mean, don't call me master anymore." In an instant, the young lady Cao Chong's eyes turned red, "Master, don't call me master, ugh. Wuwuwu~~~~~" Guo Jia: "%%£¤#%#£¤" Damn it! This kind of student cannot be taught at all! Guo Jia: "" Cao Pi: "" Guo Jia sat drinking tea, and Cao Pi stood respectfully next to him. The two of them have been in this state for a long time. , Guo Jia never spoke, and Cao Pi never took the initiative to speak, and he never showed any impatience. Guo Jia picked up the tea bowl and sipped it slowly, then finally put down the tea bowl and said, "You should know that I have met many of your brothers in the past few days." "Students know." Cao Pi replied, Then he kept silent and didn't say much. Speaking of it, it was really similar to Sima Yi's style. "To tell you the truth, according to my observations these days, among you brothers, the one I like the most is you, Cao Pi!" Guo Jia said directly to Cao Pi. Of course, what Guo Jia said was definitely not a lie. Although the person he was most optimistic about at the beginning was indeed not Cao Pi, after these days of "observation" and going around, he finally came back to Cao Pi. Upon hearing Guo Jia's words, Cao Pi immediately bowed his hands and said with fear and fear, "The teacher is so complimentary, how can the students be so virtuous? Compared to my younger brothers, the students are really, really, stupid." Cao Pi said Face of shame. "It doesn't matter if you are a little stupid. Sometimes, being too smart is not good." Guo Jia said, yes, it's like the students are better than the teachers, so it's still a fool's errand! Of course, a truly competent teacher would definitely want his students to be smart and excel, but Guo Jia is definitely not that great of a guy. Outperforming others? Isn¡¯t it funny? The most annoying thing is the kind of student who stumps the teacher with difficult questions. Moreover, the most annoying thing is the kind of bastard who deliberately asks the teacher with difficult questions even though the students can do it themselves! That's right, I'm talking about you, Cao Zhi, don't look around and stand at the door for me! "Since ancient times, there has been an order of growth and development. Some things are just?It is enough to cultivate one's moral character, be diligent in learning, work tirelessly day and night, and not violate the moral principles of being a son of man. "Guo Jia said. "The student understands and hopes the teacher will give more guidance. "Cao Pi immediately replied. "Well, real talents are often all-rounders and have a little involvement in various disciplines. For today¡¯s first lesson, let¡¯s start with something simple. Pythagorean theorem, I don¡¯t know if you have heard of it. "Guo Jia said. Although he is a liberal arts student, in front of these people, Guo Jia has always been able to show off his scientific knowledge, just like he did when he fooled Liu Ye. "Hook three strands, four strings and five? "Cao Pi asked. This kind of thing has been recorded in the "Zhou Bi Suan Jing", an arithmetic book in the Western Han Dynasty, and Cao Pi had heard about it. Guo Jia nodded, somewhat knowledgeable, "Then you know why Is it hooking three strands, four strings and five? " "The students don't know. "Cao Pi replied, knowing is knowing and not knowing is not knowing. At least Cao Pi will not pretend to understand. "Nonsense, if Cao Pi knew, he would be a god. Although it cannot be said that no one in the world knew, but everything that can be known is absolutely He can be called a mathematician of this era. Is it possible that Cao Pi is a mathematician? Only he, Guo Jia, is a combination of mathematicians, physicists, chemists, biologists, etc. Besides, what if? If Cao Pi even knew this, then what else could Guo Jia teach? "The reason why it is hooking three strands, four strings and five is because the square of three plus the square of four is exactly equal to the square of five. "Guo Jia explained proudly. "This, students don't quite understand. "Cao Pi frowned and said. "Oh, the square of three is three times three, the square of four is four times four, and the square of five is five times five. "Guo Jia quickly added a concept. "This, students don't quite understand. "Cao Pi frowned and said. Guo Jia's eyelids twitched. Well, the ancients really didn't dare to praise their mathematical abilities, so he explained in detail again, "Three times three equals nine, four times four equals sixteen, five times five equals sixteen. Five equals twenty-five. And nine plus sixteen equals exactly twenty-five. " "This, student. . . . . . "As soon as Cao Pi spoke this time, Guo Jia immediately gritted his teeth and interrupted, "Three times three means three threes added together, three plus three plus three; four times four means four fours added together. , and so on. " "Students still don't quite understand this. "Cao Pi said weakly. "Fuck! There's no way to teach this kind of student! (To be continued.