Well maybe you could try to sum up the religious back story or... Surely there's a historian or cultural figure in the city who could introduce us visitors to the traditions of Saeng Seong. Learning about the culture of the place you visit is always good. [He's hoping he can make the idea of sharing as appealing as possible.]

Uh. By the way, just how "cold and miserable" does it get here?

Traditionally people wore scary costumes like ghosts and evil witches and stuff but over the years there's a lot more variety. A lot of kids dress up in funny costumes or as their favorite characters. Sometimes adults dress up in costumes too for parties.