What can be put under the floor to ward off evil spirits?

Copper coins have been laid since ancient times ~ Let me say a few words: 1, according to the location of Qinglong Mountain in Siling Mountain (usually east or southeast)-old houses usually dig treasures from this mountain! 2, the bed is placed and buried according to 8 hexagrams (town house to ward off evil spirits)! Hang a bronze mirror on it, and put down a copper basin (ancestors used copper chamber pot at night, hehe)-in romance, treasures are usually dug out from under the bed and put on the porch. This method is the mountain flourishing, and the mountain is the orientation in geomantic omen. Generally, the gate faces the same as the house, and the quota is generally the owner (owner). For example, when I was 24, I buried it. 5, the type of display-generally copper coins, copper can ward off evil spirits, 6 colors-this method corresponds to the five elements! Yellow is better, gold, copper coins, yellow silk and so on! Primary gold, gold raw water ~ ~ ~ 7. When you put it in the ground, the gold will not be buried, thinking that it is broken, find some soil to bury it together! Hehe, the above is a general way to invest money, and superstition can also be said. This is a folk custom, let's have a good luck! Hehe above! ?