Don't forget the national humiliation of 9 18. Why did you whistle in September 18?

9 18 whistle is to remind our people not to forget the 9 18 incident and national humiliation.

It started in Shenyang, where the September 18th Incident happened, at 10: 30 at night, because the September 18th Incident happened at night 193 193 18.

Later, considering that most citizens are resting at 10, the municipal government changed the alarm time to 9: 00 pm every September 18 -2 1, which not only sounded the alarm, but also let the cars parked on the expressway whistle for three minutes to commemorate the "September 18th" incident.

Since 1995, Shenyang has sounded the air defense alarm for 3 minutes every night of September 18 to warn people not to forget the national humiliation. At present, more than 100 cities including Harbin, Changchun, Kunming, Hefei, Hangzhou, Urumqi, Nanchang, Qiqihar, Jinhua, Benxi, Taiyuan and xi' an choose to broadcast air defense warnings on 18 every September.

Most cities choose to sound the September 18 air defense alarm at 09: 0018 every year, and individual cities are different according to specific conditions.

Extended data:

9 18 air defense alarm process

Air defense warning can be divided into pre-warning, air raid warning and disarming warning.

early warning

Objective: When forewarned, it will sound when there are signs of our attack and ask people to start evacuation.

Ring mode: ring for 36 seconds, stop for 24 seconds, and repeat for 3 times.

Air alarm

Objective: When the enemy tried to attack us, the air raid alarm sounded.

Ring mode: ring for 6 seconds, stop for 6 seconds, and repeat 15 times.

All clear

Purpose: to give an alarm when the air raid or war situation is temporarily lifted.

Ringing mode: a long sound, continuous ringing for 3 minutes.