Setup is a law: Original wooden wall with self-tapping screws into the wall [2 screws from the top and bottom 25 cm]， cement wall first with a hammer drill two 6 mm holes and then into the plastic expansion then tighten the screw into the tube. Screws into a position just to get into the hanger sets no subject [screw screwed into place around will shake]， then hang hanger to Hou.