It's a bit difficult to criticize another country that isn't your own. Any criticism should be qualified always with something to the effect of "I do not not live in China/am not Chinese/do not know the language/etc.".
It also requires a vast knowledge of history and culture that I (and I assume most people here) do not really know about. Sure we can make some observations about the country, but I think the best way to even broach the subject of real scrutiny of China's issues is to read about them from Chinese authors themselves, or at least from western Marxist Leninist sources. That way you can be more sure that "hey, this person has a vested interest in the betterment of China along with the knowledge about these things".
As a native of a colonized land I can only look from the outside and admire what they have accomplished. And hope that they find Chinese Marxist solutions to their Chinese problems, many of which are caused by the contradictions of capitalism.
And I would hope that they return the same courtesy for my people.