From July 15 to 18, air-defense exercises will be conducted across Taiwan proper and outlying islands.
When the air-defense alarm sounds (or all citizens receive mobile phone warning messages), all citizens shall follow the guidance of the police and civil defense staff to evacuate to adjacent shelters.

Siren sounds indicating the start of the drill:
15 seconds of long note and 5 seconds of short notes, with an interval of 5 seconds between notes, repeated for 3 times, totaling 115 seconds.
All clear: A long, uninterrupted siren lasting 90 seconds.

Anyone who fails to comply with the control measures and procedures of the drill will be fined between NTD $30,000 and NTD $150,000 in accordance with the Civil Defense Act.

Details of the exercise schedule and important notes are outlined in the official notice from the All-out Defense Mobilization Agency, Ministry of National Defense, as well as in the multilingual publicity materials, including versions in Southeast Asian languages (see attachment).