hello, dear netizens! Now reply to your questions as follows: The "dust all over the sky" you mentioned may refer to dust, which is generated in the process of building sites and urban garbage cleaning. The former is managed by the housing and construction department, while the latter is managed by the urban management department. Factories and enterprises that produce dust will also have occasional dust if their dust removal facilities are damaged. This kind of situation is managed by the environmental protection department. Motor vehicle exhaust and catering fumes are also important factors for air pollution. In a word, the "dust all over the sky" in the city is formed by comprehensive factors, and its governance requires the dedication of all departments and the participation of the general public. I hereby urge the general public, netizens and all functional departments to do their part to protect our homeland.