Made by yours truly.
Note that this list only contains the first part of Skill Breakthrough, which pertains to skill upgrades, rather than skill changes, which is something that came rather recently, even in China.
More importantly, please keep in mind that we are not China and things are wont to change. This is just to let people see what China has. Our version may be different, as you may tell by the fact that some characters in this list have skills quite different from us. Don't get too excited (translation: don't delete this thread please).