You want to be polite. But after a day of sightseeing in vinyl shoes, you are slightly apprehensive of the Chinese tradition of taking off one's shoes. Plus the slippers look like they are about four inches too short. What will you do? Learn in your sweaty socked anxiety how to ask your host apprehensively... 'Do I need to take off my shoes?' in Chinese... hopefully in a tone of voice that will tip off your host to insist that you don't.