On February 25, 2020, JRSIS Health Care Corporation's Board of Directors elected Dianjun Mu to fill the vacancy on the Board of Directors caused by Guoqing Jin's resignation. The Board also appointed Dianjun Mu to serve as Chairman of the Audit Committee. Dianjun Mu was most recently employed by Tonghe County People's Hospital, where he worked from 1998 to 2019 as Chief Financial Officer, from 1993 to 1998 as Chief of Internal Medicine, and from 1989 to 1991 as a physician.