I forgot to include notes on why I wrote Chun-Yan the way I did.

I've never read any fanfic that mentions Chun-Yan, so I was just going off her one appearance in the anime. She seemed extremely upbeat, cheerful, and spoke somewhat childishly (both in tone and in what she said), at least in my opinion. While Yao is, on the surface at least, a fairly happy guy (unless he doesn't like you), he's nowhere as cheerful as Chun-Yan appeared to be. However, the things that China the country has gone through mean that Chun-Yan can't be happy all the time, either. So I wrote her as joyful for the most part (justified by the Tang dynasty being China's golden age), working what I saw as her childishness into an effect of China's love of children (and her spending a lot of time with kids), and kept some of Yao's melancholy about his siblings and dislike of war and violence. When China is Chun-Yan, though (in the present), she makes an effort to be more cheerful and carefree, and to see the bright side to things, to honour the innocence of the children she was with, and because she was at her happiest as Chun-Yan. In essence, that was how I tried to differentiate Yao and Chun-Yan. Anyway, I hope you liked the fic!