Li is the husband of Niu. Relevant information of the No.1 13 issue of Yangshengtang: Today, the experts visiting Yangshengtang are a couple, Li, chief physician of head and neck surgery, Cancer Hospital of China Academy of Medical Sciences, and Niu, chief physician of ultrasound department. They are life partners who have been together for nearly 30 years, and they are also "comrades-in-arms" who have saved countless patients side by side on the battlefield of life and death.