Hello, you can watch Feng Shui, right? Can I hang billboards on the west wall in the north of my house?

Your question is difficult to answer. First of all, you can't believe in Feng Shui, and you can't believe it all.

First, feng shui is related to the master's numerology. In the same house, one person lives in an auspicious house, and another person with different numerology may live in a haunted house.

Second, it has something to do with the house itself. You only provide directions, but there is no other information such as the specific direction of the house. It is impossible to judge whether it is good or bad to hang a billboard on the north west wall.