Nanjing University. Haig is a doctor majoring in physical chemistry in Nanjing University, and a university physical chemistry teacher with more than ten years of teaching experience. He is currently the owner of Bi Li Bi Li website. Bi Li Bi Li website is officially certified as a doctoral student of Nanjing University, and a materialized teacher of the university. Engaged in undergraduate physics teaching 1 1 year, and is also the largest physics research group owner in China.