Why is there no air defense alarm in Shenzhen?

There is no air defense alarm in Shenzhen. In 20021and 2023, Shenzhen sounded an air defense alarm.

Shenzhen Civil Air Defense Office has a municipal civil air defense command information support center, which is responsible for sounding the city's air defense alarm signal. On the annual "National Defense Education Day", air defense alarms will be tried out. In addition, the early warning will be tried out on the third Saturday in September and lifted on the third Sunday in September. Each warning will sound for 3 minutes.

There are more than a thousand air defense alarms in Shenzhen, which are distributed in parks, squares, shopping malls and other public places, and are controlled by the municipal civil air defense command information support center through a special communication network control system.

Therefore, it is not that there is no air defense alarm in Shenzhen, but a trial sound is conducted at a specific time and place to enhance the public's national defense concept and civil air defense awareness.