^ Definitely her "Voice of EARTH"-album. It's PERFECTION!
"My Life" is a good album too, but not as great as her first one. From "My Life" I can recommend: "Kuon no Kawa", "Shiroi Tsubasa", "Ballad", "Nobody knows but me" and "my life"!
As for Chinese music, you should really give her album "~Love Moon Light~" a try, because it's awesome!