Director of the Endocrinology Teaching and Research Section, Professor, Chief Physician, and Doctoral Supervisor. Dr. Xing began clinical work in the Department of Endocrinology at Peking Union Medical College Hospital in 1984. She specializes in the diagnosis and treatment of endocrine and metabolic diseases. As a project leader, she has presided over National Natural Science Foundation projects. As a main participant and sub-project leader, she has participated in multiple research projects including those funded by the China Medical Board (CMB) of the United States, and the National 'Ninth Five-Year', 'Tenth Five-Year', and 'Eleventh Five-Year' scientific and technological research programs.