How about the indoor heated swimming pool in the Cultural Palace?
The price is high. The afternoon session costs 50 yuan, but the environment is good. Indoor heated swimming pool is not easy to get tanned, and there will be children taking swimming lessons. They can take classes and learn to swim. Lifeguards are very professional. They can not only do life-saving work, but also teach swimming. They are very enthusiastic, the only drawback is that the shower room has no curtains and is not particularly convenient.