An is one of the main inheritors of Cao School Guzheng in Henan. For many years, he has been mainly engaged in the performance, arrangement, research and teaching of this genre. In recent years, in addition to stage performances, audio-visual products have been recorded and published many times at home and abroad, including CDs and tapes of Henan Guzheng Qu, the third volume of Complete Works of China Guzheng, tapes of Fumao Record Company in Taiwan Province Province, Famous Songs of North and South Guzheng Masters, Guzheng Qu Collection by China Guzheng Master Cao Dongfu, and CDs of Hong Kong Record Company. In addition, it has repeatedly recorded performances and lectures for national and local radio and television stations. Published "Cao Dongfu Qu Zheng Ji". (co-edited with sister Li Bian) and has been invited to give lectures and perform in Japan, South Korea and Singapore for many times.