Several urban types in hippocampus

There are abc cities in the hippocampus. A-level cities refer to first-tier cities, B-level cities refer to second-tier cities and C-level cities refer to third-tier cities. Class A cities: Shanghai, Beijing, Tianjin, Guangzhou, Shenzhen, Zhuhai and Hangzhou Class B cities: Zhongshan, Chongqing, Nanjing, Xi 'an, Wuhan, Fuzhou, Haikou, Taizhou, Ningbo, Suzhou, Changzhou, Wuxi, Wenzhou, Qingdao, Yantai, Dalian, Shenyang, Foshan, Shunde, Shantou, Xiamen, Quanzhou. The price of abc City in Haima should be different and may be adjusted according to the development of the city.