This is really the most fun gymnasium ever. Unlike the Bird's Nest in Beijing, the whole is spherical. It's amazing to put the picture in a minute. It's like a ball standing on the flat ground. Let's talk about this hall again. Its function is similar to that of the Bird's Nest. It's mainly to hold concerts for some big bands or something, and also to hold sports meetings or something. And the key is also very high, there is a very beautiful viewing platform.