Daoist artifacts touching Ling are usually the artifacts hanging on the eaves of temples or Taoist temples. The sound of Taoist instruments touching Ling represents the sound of the right law, which can suppress evil spirits. In geomantic waters, copper bells are also used to ward off evil spirits. Hanging copper bells on windows or doors prevents dirty things from entering the house. But generally copper bells are the best, but there is also a kind of bell called bell, which is one by one. This kind of hanging on the window will attract dirty things, there are many taboos in the use. 1. If the place of the house or shop is too shallow, its usage: 1. If the door is directly opposite the street, hang the bell on the upper left corner of the top of the door, so as to avoid rushing into the street. Second, the window of the house is opposite to the window of the opposite house, while the other side has more people than the house. Hang the bell in the window of the house, so that the property of the house is not affected by the other side. 2. Choose a bell with Dragon Tortoise as a foil. This bell is commonly called luxury bell. It can be hung in front of the window or door to achieve the effect of luxury. 3. This year's Five Yellow Places are in the northwest. If the door or bedside is in the Northwest direction, a copper bell can be hung in the northwest direction to dissolve the Five Yellow Places.