Wudi Qian is a feng shui mascot composed of ancient coins. Generally, when it is placed at home, it is decided according to the feng shui layout at home. Can be placed under the threshold, can also be placed behind the door, to resolve all kinds of hostility, play a role in calming down.
But don't face the gate directly, and don't face the neighbor's door, so as not to affect the harmony between neighbors.