Traditional Culture Encyclopedia - Hotel accommodation - Is the bed board of the hard bed fully sealed?

Is the bed board of the hard bed fully sealed?

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Baidu Encyclopedia says that the bed board of the hard bed is not fully enclosed, and the whole board of the Chinese bed board is breathable, because the board itself has certain breathability.

A hard bed refers to a wooden bed that is not soft or paved. Hard bed is not suitable for people who are too old or too young.