What kind of etiquette did the appellation in ancient China refer to?

Bowing is lighter than worshipping, which is often used when the host and guest meet. "Yi" means to hold hands as a gift, and to use "Yi Tu" as a gift for ordinary surnames who are not related to each other, and push the hand down slightly; For married half-surnames, use the "time-saving" ceremony to push hands; Those with the same surname use the "Yi Tian" ceremony and push their hands slightly upward; For people with high status, the "long bow" ceremony is adopted, that is, hands are held together from top to bottom.