Today, I was locked in the elevator.

Working in the morning, the elevator sat halfway down, and the elevator stopped. Fortunately, this elevator is not bad, there is a backup power, the elevator continues to pull to a certain floor, to avoid the embarrassment of stuck between two floors. Then, when the alarm is triggered, the ghost will know whether or not the ghost will know when the alarm is triggered. Come out of your cell phone, no signal. Although the elevator is marked with the "this elevator signal has been covered" by China Mobile Unicom, everything is cloudization in the face of power outages. The device that receives signals in the elevator is out of power. How can it be covered? The last time I was in the elevator with memories, it was before year 78. The elevator was stuck between two floors and then crawled out. After waiting for 10 minutes, the security guard came. The whole building had a power outage. I thought that if a fault occurs in the elevator, I don't know how long it will take to be found...