This character, most commonly referred to as “Double Happiness,” is in fact the Chinese word for happiness, Shiang Tzi, written twice. This emblem is used by Feng Shui practitioners as a charm to improve marital relations and as an all around good luck talisman. It is commonly seen on wedding goods, holiday favors, etc. In Feng Shui, the emblem is typically placed in the “relationship” sector of the home, or where it will be the first thing viewed by a newlywed couple. The image is often decorated with lucky animals or hearts.
Some variations on the character: