Slums are highly concerned.

Pan Jiahua, a researcher at the Center for Urban Development and Environment Research of China Academy of Social Sciences, said in an interview with the Global Times that "slums" in developed countries and "slums" in developing countries are different concepts. The social security system in developed countries has a wide coverage and strong ability. As long as they are legal immigrants, their basic living, medical care and education can be guaranteed. However, immigrants and locals who moved to developed countries are not at the same starting line in development, so their living areas have become slums. Pan Jiahua believes that a series of violent incidents such as the riots in Paris and the explosion of the London underground have gradually made developed countries regard slums as social instability factors. On the surface, slums are economically poor, but people living in them face more than the pressure brought by the gap between the rich and the poor. Discrimination and religious and cultural conflicts when they are integrated into the mainstream have gradually caused an imbalance in their mentality. This subconscious confrontation, accumulated in a relatively closed slum, may eventually lead to an "outbreak."

Regarding slums in developing countries, Jiang, deputy director-general of the Third World Research Center of China Academy of Social Sciences, pointed out that the slum phenomenon in developing countries is not only an economic problem, but also a social problem, which is mainly caused by backward social development and has a great relationship with rapid urbanization. There are two reasons for slums: one is the thrust-the rural population can't live in the countryside. Due to the lack of land or the concentrated possession of land by a few people, a large number of farmers can only flock to cities from their hometowns; Second, pull-the development of urban industrialization needs a lot of labor, and the infrastructure of urban life is relatively better than that of rural areas. The convergence of the two forces has caused excessive rural population to flow to cities and become an unabsorbable surplus labor force. There is a word in Latin American countries called "squatter", which describes a poor man wandering around the city empty-handed, squatting casually in a deserted place, surrounded by a few pieces of iron. This place belongs to him and is the home of squatters. Jiang believes that the fundamental way to solve the slum problem in developing countries is to coordinate social development and economic development, make the pace of urbanization adapt to the stage of economic development, and especially grasp the transfer speed of rural population.