What is the unit of a frame bed

The unit of a bed is expressed in sheets. The number word used to describe a bed is one bed.

The shelf bed is a Han Chinese bedding. The bed with four pillars and four poles erected on the bed. Some have three rails at the ends and the back, some are placed on the face of the door cover, but also in front of the set step and set up - cover (pull the bed) and so on. There are many styles, exquisite structures and gorgeous decorations. Decorated with historical stories, folklore, flowers, horses, landscapes and other subjects, including harmony, peace, good luck, good fortune, many children and other symbols. Style or simple and generous, or grand and rich.