Why are there so few people in the old city of Guiyang? Where did everyone move to?

Population mobility. Move to a new city. Urbanization, urban renewal and transformation, and population mobility brought about by economic development. Most cities in China are facing the problem of population decline in the old city, which is also an important issue of urban sustainable development. In order to solve this problem, the government has taken measures to encourage people to stay in the old city, improve infrastructure construction, protect historical and cultural heritage and improve the living environment in the old city. It can also promote the economic development of the old city and attract young people to settle here by introducing new industries and attracting investment.