1. 2022.6-now, Yanbian University, Department of Pharmacognosy, guest professor  2. 2015.11-2022.6, Shenyang Pharmaceutical University, Faculty of Functional Food and Wine, Professor 3. 2006.8-2015.11, Shenyang Pharmaceutical University, School of Traditional Chinese Medicine, Professor 4. 2005.8-2006.2, University of Alabama at Birmingham, Senior Visiting Scholar 5. 1995.8-2005.8, Liaoning University Of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Professor 6. 1992.8-1995.8, Liaoning University Of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Vice-professor 7. 1986.9–1989.7, Shenyang Pharmaceutical University, Medicinal Chemistry of Natural Products, Master 8. 1978.3–1982.1, Liaoning University Of Traditional Chinese Medicine, Pharmacy, Bachelor