I think that Yoon wanted to do something different and get to know the new culture better.
And thats why she wanted Christmas. And that her classmates liked and it seemed cool so she wanted to try it out and see if it was fun. I think that at first Yoons parents were beenig a little harsh because all she wanted was Christmas, and her parents didn't want her to. I liked the pictures in the book because they were great and colorfull and they went along with the story and they make you think about the story.

Sincerly,
Friends/Sydney