Ambassy club has indoor and outdoor pools that both require a membership for regular usage. Non-members are allowed to show up and test the facilities for a one-time fee of 150rmb, otherwise it’s 7000rmb for a year-long membership. To stop people coming twice on the cheap, they are taking everyone’s name and phone number – seems they’ve wised up over the winter months. In any case, the indoor pool requires a swimming cap but not the outdoor one. Towels are provided and you may be asked a couple of questions about your health but it’s pretty chill and costs nothing, no need for ID. The outdoor pool opened May 15th and closes at the end of September.