1993-1999 The Affiliate Hospital of Xuzhou Medical College China Lecturer, Attending, Surgery 1999-2001 Affiliate Hospital of Xuzhou Medical College China Clinical Associate Professor 2003-2005 University of Pittsburgh School of Medicine Pittsburgh, PA Research Instructor, Surgery 2006-2013 Cleveland Clinic Foundation General Surgery Project Scientist 2014- The Affiliate Hospital of Xuzhou Medical College China General Surgery Professor ， Director