It's best to hang the exclusive paintings of the five mountains in the East, because the exclusive paintings of the five mountains mainly refer to Mount Tai in the East, so it's better to hang the paintings in the East.
China pays more attention to geomantic omen, so it is generally required to be hung behind the seat, which can be used as a backer. Solemnly declare: the answer is for reference only, please don't be blindly superstitious.