Tennis Center of Zhong Qi Forest Sports City in Shanghai is a symbol of Shanghai's development and a first-class sports facility for hosting international large-scale sports events. ? The design of the main tennis court symbolizes the peony, the flower of China. The design of the auxiliary tennis court symbolizes the flowers and magnolia in Shanghai. The opening and closing structure is very representative, and the opening and closing way of its roof is the first opening and closing form in the world so far. The opening of the roof fully shows the flowering patterns of peony and magnolia. Its opening time is 7 minutes and 30 seconds, and the energy cost required for one opening is only 1 RMB! The roof is open, which can block out the surrounding sunshine. This is like the shade of a big tree, forming a fresh environment and making the audience and people inside and outside the venue feel comfortable. ?