What security risks do different warnings of dust and smog represent?

Sandstorms are mainly accompanied by strong winds and decreased visibility. Early warning will remind people to pay attention to personal protection. Allergic people should wear masks, reduce going out, be careful of falling objects at high altitude, stop working at high altitude, and avoid blowing down trees or outdoor advertisements. Pay attention to the line of sight in traffic, reduce the speed and avoid the vehicle from losing control.

Haze warning is mainly to reduce outdoor activities and health tips. Patients with cardiovascular and cerebrovascular diseases and cardiopulmonary diseases should avoid activities, take personal protective measures and use professional protective masks to avoid the harm of pollutants to health.