If the staircase is in the middle of the room, it can be said that it is a dragon column, beech stairs to increase knowledge, rosewood stairs to increase peach blossom luck, black mahogany stairs to increase career luck, teak stairs to increase longevity, rubber wood to increase health but still suffering from minor illnesses.
If the staircase in the middle passes through the patio, it will prosper because of its career. Although the business is booming, it will also leak a little money, which will not affect too much.