There is a traditional ceremony held on the third day after an infant's birth called the "rite of the third morning." Back in the days of high infant mortality, parents didn't dare celebrate a child's birth until the third morning.
打從一個人出生，滿三天要舉行「三朝之禮」，在過去嬰孩夭折率高的時代，父母至此才能安心慶祝孩子的降臨。