This man has been clever since he was a child. He is a genius in science and got full marks in physical chemistry in the college entrance examination. However, the college entrance examination coincided with the special period of the Cultural Revolution. He should have attended Peking University in Tsinghua, so he was pushed out to Fudan, Shanghai and assigned to Xi 'an as a middle school teacher. Since then, he has been diligent and studious, and he has won many national physics competitions. He is versatile and can tutor all high school subjects. Strangely, he speaks authentic English, but he can't change the strong northern Shaanxi dialect. He once taught a special course of trigonometric function in physics class, because the topic involved trigonometric function. The students reported that Mr. Liu's teaching effect was excellent, and no one in the class was worried about trigonometry anymore. It is said that his English level has reached PETS 5 (the highest level).

Liu himself has a hobby-playing chess, and his chess skills are unparalleled. It is said that he once played against Yang Guanlin, and the result is unknown, so he has dropped out of the list.