The eight rites refer to the "rites of the instrument", "rites of ceremony", "rites of speech", "the rites of treating people ", "walking gift", "ornamental gift", "tour gift", "dining gift ". The four rites of passage refer to the rite of admission (age 7), the rite of passage (age 10), the rite of youth (age 14), and the rite of passage (age 18).

Expanded Information:

The significance of the Eight Rites and Four Ceremonies:

Etiquette is a convention of people's lives and social interactions, and people can base their lives on a variety of etiquette norms, correctly grasp the scale of interpersonal interaction with the outside world, and reasonably deal with the relationship between people.

If there is no norms of etiquette, often make people in the interaction feel at a loss, and even rude to others, making jokes, so familiar with and master the etiquette, you can do to touch the class, to treat people just right.

Baidu Encyclopedia - The Eight Rites and Four Ceremonies