Wanzhou technician college. Wanzhou District, under the jurisdiction of Chongqing, is located in the upper reaches of the Yangtze River and the northeast of Chongqing, in the center of the Three Gorges reservoir area, and is a distribution center for materials in northeast Chongqing, eastern Sichuan, western Hubei, southern Shaanxi, eastern Guizhou and western Hunan. Wanzhou Technician College, as the only inland river five-star crew training institution in China, can conduct training and textual research. The classification of inland river ships refers to the classification of inland river ships into five grades according to the gross tonnage of ships or the power of main propulsion devices according to the Rules for the Certification of Inland River Ship Crew Examination promulgated by the Ministry of Communications 1992, so as to issue corresponding certificates of competency to the crew members who take different grades of crew examination.