The associate professor of School of Earth and Space Sciences, the deputy director and director of identification laboratory of PKUGAC, recognized by CGC, the standing director of Gems & Jewelry Trades Association of China, the member of CGC exam committee; engaging in teaching the courses such as ore deposit geology, non-metallic mineral resources, mineral inclusions, gemstone inclusions and internal characteristics, middle and low precious gems, gem deposit and so on; participated in multiple programs of National Natural Science Foundation; published 10 papers, participated in compiling one textbook and translation work.