2011-present: Director, Medical Science Practice Center, organization of Medicine, Tsinghua University, Beijing, China 2008-2011: Head, Experimental Animal facility, Biomedical Analysis Center, Tsinghua University, Beijing, China 2000-2008: Postdoc, the Netherlands Cancer Institute, Amsterdam, the Netherlands 1997--2000: PhD candidate, College of Life Sciences, Peking University, Beijing, China