Since the beginning of this year, there have been three severe sand and dust weather events in Beijing that have affected the air quality. Dust is one of the main sources of air pollution in Beijing.

Beijing launched a 100-day special campaign to control dust to comprehensively strengthen the prevention and control of dust pollution. 7 departments of Beijing's ecological environment, housing construction, urban management, transportation, water affairs, landscaping, and urban management and law enforcement have formed a joint supervision team to carry out joint supervision and inspections.