There is a swimming club, 180 yuan has one class, 4 classes/month, 280 yuan has 8 classes/month and 350 yuan 12 classes/month. There is also a 30 yuan membership fee. Or 5 10 yuan: 12 shifts/quarter.
This swimming pool is operated by Beijing Thermal Power Group, and the cost is relatively high. You need 40 yuan for a single swim and 260 yuan for a card/10 times/month.