The doorman didn't know, and Miss Liao didn't have a chance to report the case.

There are many buildings near the building. Even if you hear Miss Liao crying, it's hard to tell which family's voice it is. There are many households in the corridor, and neighbors simply can't tell which one is in trouble, so they generally ignore it.

But the police received a report directly providing the address. ...

Miss Liao is actually talking to a friend on the phone. The voice "Please wait for me ~" is actually written to a friend on the phone. When my friend heard Miss Liao crying loudly and turning over her mobile phone, she knew something was wrong and immediately called the police.