Was Yao Chengguang's assistant in mid 90s
http://v.youku.com/v_show/id_XMzA1Njc1MzY=.html
http://v.youku.com/v_show/id_XMzA1Njk4MDQ=.html
http://v.youku.com/v_show/id_XMzA3OTYyOTI=.html
http://v.youku.com/v_show/id_XMzE5NjE0NjQ=.html
http://v.youku.com/v_show/id_ce00XMzE5NjI2NDg=.html
http://v.youku.com/v_show/id_XMzIwODE4NzY=.html