994-1998 Associate Research Fellow, South China Institute of Botany, China Academy of Sciences.
1998- Currently a researcher at South China Institute of Botany, China Academy of Sciences.
1March 1996-1June 1998, Department of Ecology and Taxonomy, University of Hong Kong.
1998 -2000 collaborative research on herbarium of Hong Kong Agriculture and Fisheries Department
August 2000-10 Senior Visiting Scholar at Kew Garden, Royal Botanical Garden, UK
From 2002 10 to present, the chief researcher of species diversity protection research group.
Research on cooperation between Macao Civil Affairs Department since March 2003.
From May to June, 2007, I went to Reuters University for cooperative research.
Since 2003, south china botanical garden, Chinese Academy of Sciences, has been a doctoral supervisor.