I-Ching coins are a powerful Feng Shui symbol used to bring prosperity and income luck. When the coins are tied together with a red string or ribbon, they are further energized. Tie three coins together to represent the trinity of heaven, earth and mankind; six coins to represent luck from heaven; or nine coins to represent the wholeness of the universe. Considered a very auspicious gift, Chinese coins double our own luck each time we give some away.