Three Kingdoms: I, a Beggar, Have Become a Sub-Sage?

Xiao Feng once traveled to the Three Kingdoms, but it was a pity that other people who traveled through time had golden fingers, or recognized a famous person as their father, but he was so miserable that he was just a beggar. Fortunately, one day, Xiao Feng became a servant of Cai Yong's house and attended the banquet of Cai Yong's house. In front of Lu Zhi, Yang Biao, and Ma Ritan, he taught them about Chinese Pinyin, the Pythagorean theorem, and the linear equation of two variables... Cai Yong: "Sir, he created the Chinese pinyin and has the merits of a sub-sage. He is not inferior to Mengzhuang. Please accept it and bow down." Yang Biao: "Cangjie created characters, Confucius taught principles, and Qin Feng popularized enlightenment. The pinyin alphabet he created is tantamount to the work of a "sub-sage", and he is only one step away from becoming a saint!" Lu Zhi: "Brother Bozhe, do you want to part with me and let me bring Zi Jin back to your house?" "My lords, I'm already here, and I won't leave easily!" Xiao Feng secretly thought, I haven't seen my sister Cai Yan yet, why should I go with you? I'm afraid I'm not crazy... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.