Yes, there is. There is a Haosha Fitness Center in Guoruicheng Community next to Guo Rui Mall near Chongwenmen. I went to see it two days ago, and the location was on the second floor of the basement. However, the facilities are quite complete, and the annual card 1499 yuan. If you don't mind the gym in the basement, you might as well go and have a look.

I don't know what you mean about the detailed introduction. There are various fitness equipment training classes such as treadmill, Latin, yoga, belly dance and jazz, as well as swimming pool. Specifically, it is still necessary to conduct on-the-spot investigations.

I suggest you have a look. At least, you also worked out during the trip, hehe.