Why are the property fees of some buildings in Country Garden 1.4 and some buildings 1.6?

The property fees of some buildings in Country Garden are 1.4, while others are 1.6, which are charged according to the urban development. According to relevant public information, Country Garden collects property fees according to the development of the city. In first-tier cities, such as Beijing, Shanghai and Guangzhou, the standard of property fees should be around 8 yuan per square meter in 5 yuan. In third-and fourth-tier cities, some prefecture-level cities or county-level cities also have properties designed by Country Garden. The general property fee is 1 yuan to 3 yuan, so some properties in Country Garden are 1.4, and some are 1.6. The properties designed by Country Garden and invited by Country Garden are some well-known properties in China.