It is made up of five colors: red, purple, gray, light blue and dark blue. According to the inquiry of China Sports official website, there are 80,800 seats in the Hangzhou Olympic Sports Center, and the seats in the tennis center are interspersed with five colors: red, purple, gray, light blue and dark blue. Hangzhou Olympic Sports Center Stadium is located on the south bank of Qiantang River in Hangzhou, with six floors above ground and two floors underground.