The government of Kunming announced that the city will sound air-raid sirens as a drill on September 18.
The air-raid sirens, which run at 10:00am and 10:15am, are divided into three phases.
a. The first air raid sirens will lasts for three minutes each. There will be 24-second intervals between them.
b. The second phase will sound for six seconds, with six-second pauses between them.
c. The third part, a single three-minute siren, will tell people the alerts are lifted.
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