If you have mastered the subject mathematics, you can go to Li Yang's class. If you master subject mathematics, I'm afraid his level can't be taught.

Li Yang, born in Quanzhou, Fujian on June 2 1958, is a CCTV host and voice actor. Deputy to the 12th National People's Congress, member of the 8th, 9th, 10th and 11th Chinese People's Political Consultative Conference [13], member of the Standing Committee and Vice Chairman of the 6th, 7th, 8th and 9th All-China Youth Federation [12], and currently chairman of Changan Animation Industry Group [1-2]. In addition, he served as the outstanding dean of the School of Film and Animation of China-ASEAN Art College.