Tan Xiaolan. According to official website, the Nanjingdong Market Supervision and Management Office in Yizhang County was formed by the merger of law enforcement departments of several units, including handling illegal acts in industrial and commercial administration, quality and technical supervision and intellectual property protection. Its director is named Tan Xiaolan. Yizhang County, belonging to Chenzhou City, Hunan Province, is located at the southern end of Hunan Province.