1992.08–1998.08: Department of General Surgery, Third Hospital of Tianjin Medical University, Resident Physician 2001.08–Present: Department of Thoracic Surgery, Peking University Third Hospital, Attending Physician, Associate Chief Physician 2015.08–2016.08: Department of Cardiothoracic Surgery, People's Hospital of Tibet Autonomous Region, Department Director Publications and Translations 1. "Treatment of Cardia Cancer via Small Incision Through Combined Thoracoabdominal Approach." Wang Keyi, Yan Tiansheng, Cui Rui, et al. Chinese Journal of Minimally Invasive Surgery, 2008, Volume 8, Issue 01 2. "Comparison of Two Surgical Methods for Spontaneous Pneumothorax in Middle-Aged and Elderly Patients." Wang Keyi, Yan Tiansheng, Liu Dandan, et al. Chinese Journal of Minimally Invasive Surgery, 2008, Volume 8, Issue 02 3. "Study on the Expression of VEGF-C in Non-Small Cell Lung Cancer and Its Relationship with Malignancy Grade." Wang Keyi, Xie Jiyan, Yan Tiansheng, et al. Chinese Journal of Minimally Invasive Surgery, 2013, Volume 13, Issue 04