Why is it a sin for christian to consult a fengshui man since they are not using the power of spirit or demon?

A christian lets God runs his life, not the fengshui man.|||I never heard that before|||Thats news to me|||Easy, its not a sin to use Feng shui. If you were a true christian, you would not judge another person for using Feng Shui.|||I am not a christian but i think it is a sin for them to believe in fengshui. Reasons: 1. Is about arrangement of good energy / spirit within and outside the house. 2. Should have faith in god. 3. These are believes. 4. But can Christianity or other religion explain these?|||sounds superstition to me