What should I do when the elevator suddenly stops running?

What should I do when the elevator suddenly stops running?
1. Immediately use the alarm bell, walkie-talkie or telephone in the elevator to contact the management and wait for external rescue.
2. If the alarm is ineffective, you can intermittently call for help or beat the elevator door to maintain physical strength.
3. It is best to lean against the wall and adjust your breathing from time to time, so as not to take drastic actions.
Such as jumping, forcing the door to climb out, in case the elevator suddenly starts, supine easy to cause breathing difficulties.