Use materialist dialectics to analyze the relevant connections and explain how to jointly prevent and control environmental pollution problems.

(1) Connection is universal, and problems must be viewed from a connection point of view. Ecological civilization is related to people’s lives and the future of the nation.

(2) Connections are specific and conditional, and conditions must be created to establish new specific connections. It is difficult to effectively grasp the air pollution situation through "individual operations", and a multi-regional joint prevention and control working mechanism needs to be established.

(3) The connections are diverse. The pollution sources causing haze weather are diverse and require joint management by multiple regions and departments.

4) The system is holistic, and we must focus on the whole thing and use a comprehensive way of thinking to understand things. Strengthening joint prevention and control will help improve the effectiveness of environmental pollution control.