Door guards

There are some interesting folk tales about the tradition of these posters, but I only remember that these guys are generals of the Tang dynasty; and their images are supposed to ward off evil spirits. It is also important that when you stick the posters, the generals are facing each other to bring harmony to the house.
This is actually a display at an exhibition, we don’t see many of these posters in urban HK now but I am sure the generals are still guarding doors in some suburb areas ;-).