The wall on the back of the bed is a pillar like a knife. Is it Feng Shui? How to resolve it?

Definitely not good. The so-called bed has poor impact, emptiness and oppression. This is a typical shock. Under normal circumstances, you don't use the solution method in bed. (Because people in traditional geomantic omen are closely combined with the bed, and it is at the weakest time) It is best to move the bed. If you really want to solve this problem, you can change the direction of the bed through decoration or widen the column to avoid its front.