1, avoid sweat stains. When wearing copper coins, you must avoid being stained with sweat. Sweat stains secreted by human body contain a lot of rubbish and waste. If it comes into contact with copper coins, its surface color will become dim, and the surface of copper coins will rust in a large area after a long time.

2. Play often. When wearing copper coins, you should always play with them. If the surface of copper coins is more shiny, copper coins are needed to absorb the oil secreted by the human body. After playing for a long time, a thick layer of copper rust will gradually form on the surface of copper coins, which is very beautiful.

3. Clean regularly. When wearing a copper coin, you need to clean it regularly, soak the white cotton cloth with water, carefully wipe the surface of the copper coin, and remove the stains on the copper coin, so as not to affect the texture of the copper coin, and also to keep the surface of the copper coin clean and tidy.