Chuntao considers sending three separate letters, but he's too excited to be at Hogwarts that he pens a single one all of the Changs.
September 1, 1892
Father, Longwei and Ai-Mei,
We're just settling in for the night, but I wanted to be the first to tell you I was sorted into Ravenclaw. You were right Longwei. And Ida, I get to steal all your scarves when I see you at Christmas to wear.
Everyone I've met is in Gryffindor though, but at least they're not house rivals.
I miss you all so much!
- Chuntao