On September 11, a reporter from Guangzhou Daily Xinhuacheng learned from the Guangzhou Municipal People's Government portal: On September 20, 2025 (next Saturday) 10:40-11:03, Guangzhou will conduct air defense alarm tests across the city.

The specific notice is as follows:
In order to enhance citizens' national defense concepts and air defense awareness, in accordance with the "People's Republic of China" and "Guangzhou Municipal People's Air Defense Management Regulations" and other relevant regulations, the Guangzhou Municipal Air Defense Alert Test Singer and the "Yangcheng Tiandun-2025" urban civil air defense exercise are hereby announced as follows:
1. Time and range of air defense alarm test sounding
September 20, 2025, air defense alarm tests are conducted throughout the city.
10:40—10:43Try to call the pre-alert;
10:50—10:53Test the air strike alarm;
11:00—11:03Try to cancel the alarm.
2. Regulations on air defense alarm signals
Pre-alarm: 36 seconds, 24 seconds, repeated 3 times, the time is 3 minutes;
Air Raid Alarm: 15 seconds, 15 times, 3 minutes;
Disable the alarm: Ring for 3 minutes continuously.
III. Issuance of air defense alarm signals (information)
Fixed alarms, mobile air defense alarm vehicles and some multimedia multifunctional air defense disaster prevention early warning and notification systems in the city, and air defense alarm signals will be issued at the same time; Guangzhou Radio and Television Station Comprehensive Channel and News and Information Radio (FM96.2MHz), Golden Melody Music Radio (FM102.7MHz), Economic Traffic Radio (FM106.1MHz) Channel, and Guangzhou Metro TV will simultaneously issue air defense alarm signals; China Telecom Guangzhou Branch, China Mobile Guangzhou Branch, China Unicom Guangzhou Branch and Guangzhou Emergency Warning Information Release System, Guangzhou VHF Intelligent Disaster Prevention Emergency Warning System will release air defense alarm test information in a timely manner through mobile phone short messages, WeChat, Weibo, etc.
IV. Other matters
During the trial period of the air defense alarm, in addition to the actual military drills carrying out evacuation and covering up, eliminating the consequences of air strikes, etc., the city's production, living order and social activities were carried out as usual.
Source: Guangzhou Municipal People's Government Website