[AlaskaErik]

I guess the advanced technology of elevator alarms and emergency phones hasn't reached China yet.

The elevator had the power shut off. No power, no way to communicate.

[Pan_Yan]

Elevator phones in the U.S. are independent of the elevators themselves. Most still use traditional copper phone lines.

[arl295]

I guess batteries haven’t reached china yet....

Usually the emergency equipment should work in a power outage

That is the point of it

[jmcenanly]

There is also the problem of relatives notifying the police about a missing person. In China, the police may already know.