China isn't doing worse than Europe and US when they were "growing up" as China is now. Asking China to do better than we did because we have polluted the earth without helping China out is unfair and China likely (and rightly) won't listen. So to answer your question: The US and the EU can do our part which is to help clean up (even if that help is to help China polute less) instead of pointing fingers or start trade wars. Carrots work a lot better than whips. AFAIK the EU does more carrot than whip which gives me some hope.