Suit if you like, suit if you like, and relax if you like.

The basic rule of social etiquette is that "honorable people have the priority to choose". Social etiquette is also a matter of politeness. Politeness is to respect the old and love the young first, so as parents, as long as they are not out of line, they are all in line with etiquette.

Of course, if you like, suits or festive Tang suits are the best choice.