The shape of the bedroom is also square. But in modern houses, quite a few bedrooms are knife-shaped. Known as the "knife-shaped room" in geomantic omen, the health of people living in this room is directly affected. But if the hilt happens to be in a prosperous position, it is also a lucky position.
There are many ways to solve the "knife" bedroom. You can put a pair of Kirin on the handle, or six emperors can melt copper coins to solve it.