The six rites are: crown, marriage, mourning, offering sacrifices, drinking in the countryside and meeting each other. This is the ancient marriage etiquette of six rites and six rites. It refers to six kinds of etiquette from marriage negotiation to marriage completion, namely, accepting gifts, asking names, accepting gifts, inviting guests and welcoming them face to face. This wedding procedure was established in the Zhou Dynasty and first appeared in the Book of Rites. Most of the later generations followed Zhou Li, but the name and content changed. In the third year of Yuan Dynasty (AD 3), Emperor Han Ping ordered Liu Xin to make marriage documents. From the Han Dynasty to the Southern and Northern Dynasties, there was no wedding ceremony for the Crown Prince. However, from the Eastern Han Dynasty to the Eastern Jin Dynasty, due to social unrest, the Six Rites were ignored, and only worship (in-laws) was performed, and there was no wedding ceremony. It was not until the Sui and Tang Dynasties that the Crown Prince resumed the ceremony of welcoming relatives, and the emperor's marriage also followed the six rites. In the Song Dynasty, the dignitaries still followed the Six Rites, but the people thought that the Six Rites were complicated, so they only performed the Four Rites, omitting asking names and inviting Japan, which were attributed to Nacai and Zheng Na respectively. "Zhu" was even omitted by Najib and only three gifts were taken, which became the customization of the Ming Dynasty. In the Qing Dynasty, only two gifts were given, namely, receiving gifts and welcoming the bride, and one gift was given to the woman's home for shopping in the middle. According to Tongli in Qing Dynasty, marriage negotiation, accepting gifts, accepting coins, inviting dates and welcoming relatives are only implemented when Han officials have more than seven items. After the late Qing Dynasty, the Six Rites evolved in a complicated way and gradually declined.