Mainland China
 

Note the electrical sign on the switch box.

 It is an fire escape mask.  A standard equipment for all hotels in some cities.  Luckily, we did not have the need to don it as we stayed in a hotel there. 

It is a very nice fire escape route sign.  It is located right above the floor, which is better than the ones nearby the ceiling.  In the event of a fire, you will be crawling on the floor, and you can still see the sign. 

'A construction worker for subway.  Note he is wearing a respirator. 

Subway station.  Note the fire escape sign above the ceiling, and arrow signs on floor. 

Hold onto the handle when taking the escalator. 

Emergency phone for fire:  119. 

Various warning signs in a subway station. 

Exit sign on the floor in Beijing airport. 

Fire escape route in a karaoke. 

A sign for an urinal:  A little step forward, a giant step in civilization. 

Fire exit sign in a newly built bookstore.