·     Jan. 2017-Present: Visiting Professor, Tongji University.

·     Feb. 2011 – Dec. 2016 Visiting Professors, The Guangzhou Institute of geochemistry,

·     Chinese Academy of Sciences, Retire in January 2011

·     Aug. 1990 ~ April, 1999; June 2000 ~ July 2001: Professor, Institute of Geology, Taiwan University;

·     Aug. 2001 ~ Jan. 2011: Professor, Department of Earth Sciences, Cheng Kung University;