When we checked into our hotel in Hong Kong I came face to face with a superstition which I’d never actually seen in this form elsewhere in China. Every number ending with four was missing from the buttons in the lift. That doesn’t mean you have to walk from to floor four from five. It is not used, for the same reason that floor 13 is sometimes not used in floor numberings in the west. The Chinese word for four ( 四 pronounced sì) is said to be unlucky because it sounds like the word for death (死 pronounced sǐ).
Don't hold your breath 
