10 to 18. The swimming pool of Ningbo China Sports City is open at 10: 00 a.m. and closed at 6: 00 p.m. In order to ensure the facilities and water quality can be fully maintained, morning is the best time for cleaning and maintenance of the swimming pool. Ningbo Zhongticheng Swimming Pool is located on the first floor of National Fitness Center, No.299 Kangzhuang South Road, Jiangbei District, Ningbo City, Zhejiang Province.