These are the coins with the Chinese writing on them, that are tied together with a red string. They usually come as hangings. Off late, they come in the form of wind chimes and key chains as well.
1. What is it good for - These coins are supposed to bring prosperity, better flow of money or income and good luck.
2. Where to keep it - These Chinese coins should be used in threes, sixes, sevens or eights. Any other number of coins will prove to be unlucky. They can be hung on the inside of doors. For businesses, they can be put in an envelope and put on or under the table. The meaning of feng shui symbols of coins is actually never ending source of income, so they can be tied to the wallet or handbag as well. These Chinese coins are believed to be auspicious gifts as well, for in gifting this to others and providing them with greater prosperity, we are increasing our own prosperity as well.