Natalia
I'm not going to provide evdeince here for a few reasons. 1) because I would think that is off topic in this post; 2) because I don't think I should have to prove the obvious that China has undergone a massive process of reform, waves of reform, in fact; and 3) because I think what you're interested in sounds more like truth and reconciliation rather than reform. Such truth and reconciliation as you suggest might be desirable and productive and lead to concrete reforms political reforms of a kind, but its absence doesn't make all other reforms moot.