You can have a look, Xiaowuji Sports Fitness Center. I have been to this fitness center, which has badminton court, football field, equipment fitness, swimming pool, indoor basketball court and so on. Especially in the football field, the national football team often comes here for training and even goes to Beijing TV! I heard that the national football team will almost turn this place into a training base. This fitness center is next to the East Fourth Ring Road, with convenient transportation.