Ten thousand. According to the inquiry of Hejin Gymnasium in official website, the total construction area of the Gymnasium is 15944 square meters, with 5,000 seats for spectators, 3,600 fixed seats and 1400 movable seats, and the building height is 30.8 meters. The National Fitness Center has a total construction area of about 2,500 square meters and a building height of18m. It is a frame-ring structure with a main floor and two local floors. The public stadium covers an area of about 20000 square meters, mainly including 1 1 football field, a standard 400-meter runway and 2000 seats for spectators.