There is a saw hanging on the window of my bedroom. Is it harmful to me?

Feng Shui solution: convex mirror transformation, concave mirror absorption, plane mirror inversion. All feng shui items should be placed according to the actual situation. I suggest you don't hang a mirror on the bedroom glass yet, otherwise it may cause conflicts between the two families. You'd better buy a gourd, tie it with red cloth and hang it above the door of your window. Gourd is an instrument of Taoism and geomantic omen, which can turn evil spirits into avoiding disasters and make money into treasure. It not only takes away the evil spirits of his family, but also adds auspiciousness to your family, killing two birds with one stone.