Chinese coins always mean prosperity, and especially symbolize protection and wealth when tied together in the shape of a sword. This is a very powerful Feng Shui charm. Coins connected together in this way give the sword power to overcome evil spirits. It is common to see a coin sword suspended from the ceiling in shops or offices for protection. The coin sword always has a red string connecting the coins together. This symbolizes life-blood flowing through the coins to produce invincible energy and to keep away evil spirits.