I know one. From Gong Wei Village, go east along Dahuisi Road (east-west road next to Peking University Stomatological Hospital), turn left at T-junction for about 30 meters, and there is a swimming pool in Zhangbei Fitness Center of Fuhai Building. The total distance is about 2 bus stops (bus No.26), and the walking time is about 10 minute. Yes, but I feel the water is a little deep, hehe. I know I can get a swimming card, but I'm not sure how much it costs to swim.