It's called treasure seat(Baozuo). It's very big like a bed. Bed is
very important in traditional Chinese daily life. The host also
meets visitors on bed. So the treasure seat is like a bed in shape.
You can not rely on anything for this kind of seat. It's not really
comfortable to sit on it the whole day to do daily work. If in case
you go to Summer Palace you can see it. You would prefer sit on
sofa to do office work or watch TV.