1. Liu Chunping is the chief physician of Breast and Thyroid Surgery Center of Union Medical College Affiliated to Tongji Medical College, Huazhong University of Science and Technology, and Yan Dangui is the deputy chief physician of Head and Neck Surgery in Cancer Hospital of China Academy of Medical Sciences. Liu Chunping's professional title is higher than Yan Dangui's and his working hours are longer than Yan Dangui's.

2. Liu Chunping is good at breast-conserving plastic surgery for breast cancer, primary breast reconstruction, thyroid problems and reoperation. His scientific research achievements have been supported by 2 National Natural Science Foundations, many Natural Science Foundations of Hubei Province, and the key project of Huazhong University of Science and Technology 1, so Liu Chun flat surgery is better.