Double happiness is "Xi", a traditional auspicious pattern in China, which consists of two happiness symbols. One of the folk customs of decorating new houses in China is popular in ancient and modern times. During the wedding, the words "big red double happiness" are cut out and pasted on the bridal chamber nave, which means that both men and women meet the festive day together in marriage; It is also used in weddings and other festive occasions to express happiness and blessings. The allusion comes from Wang Anshi's answer to the question of marrying a wife and the title next to gold, so people write this kind of double happiness. Double happiness porcelain jars are mainly used for weddings, and single happiness word jars can also be used for weddings and other occasions. The meaning and implication of a single happy word are not as rich as double happiness. thank you