What is the law of urban development in ancient China?

The law of urban development in ancient times would be different in different dynasties, probably characterized by the following.

1 The size of the city continued to expand, and the number of cities continued to increase.

2 Diversification of the functions of the city, from the original political center to the economic center, cultural center and other comprehensive development.

3 The emergence of night markets, grass markets, etc., breaking the boundaries of time and space.

4 broke the boundaries of the towns and cities, in the residential areas also appeared in the concentration of commercial activities.

5 Cities gradually increased from north to south, with more cities in the south than in the north.

6 Functionalization of cities appeared