What do you mean by auspicious days?

Coronation: refers to the coronation ceremony and gift ceremony held by ancient men and women in adulthood.

Crown ceremony: "crown", here read "guàn", the noun is a verb, meaning to wear a hat. Crown ceremony is the rite of passage for Han men in ancient China, which means that men can get married and participate in various activities as adults. Men are generally crowned at the age of twenty ("coronation at the age of twenty").

Gift: "cue", don't put it in the bun. Gift-giving is an adult ceremony for ancient Han women in China. Generally, after the age of fifteen, if the woman has promised to get married, she will hold a gift.

"This is a lucky day" means that a good day must be chosen to hold the adult ceremony.