Why do some people say that carrying copper coins with you can ward off evil spirits?

Evil things are afraid of official seals,

Official copper coins imply official seals,

Can ward off evil spirits.

In ancient times, gold and silver were thought to ward off evil spirits.

Copper bars can also be used after gold and silver.

Copper coins mean the power of the official seal,

Nature can be used to ward off evil spirits.

Advanced totem,

Jade, gold and silver ornaments,

They are all excellent evil spirits pendants.