In the government's fire safety ads those days, people were advised to use a pointed high-heel to break the glass and press the alarm switch. Maybe because of increasing complaints in recent years, they have taught people to use keys to break the glass instead.
Examples (Wiktionary)
Mandarin
哪个没长眼睛的把碗打碎了?
哪個沒長眼睛的把碗打碎了?
nǎ ge méi zhǎng yǎn jing de bǎ wǎn dǎ suì le ?