'Air raid alert': Taiwan holds annual evacuation drill amid China tension

[Collection]An "air raid alert", asking people to evacuate to safety immediately, was sent via text message. "When you receive the text message, please be aware of the wordings such as 'test' and 'drill' and stay calm," Taiwan President Tsai Ing-wen said in a reminder to the public on Facebook about an hour before the exercise named Wan An, which means everlasting peace.