Geomantic omen of convex column in bedroom interior wall

It's easy to stick out columns in city bedrooms, but the columns should not be too big. This is a support column, and Feng Shui thinks it is a dragon arm. If you hang some gourds on the post, you will get rich. If you hang a brush on the post, it will be beneficial to your studies; If you hang a purse on the post, it will be good for your fortune. You can't hang anything that represents bad luck.