A communist society, is a society in the absence of a state, without social class, and with no mechanism for the maintenance, transfer or acquisition of private capital.
So that I am not mistaken, I will define each of those three things below.
All the above being understood it should be clear to you that neither china, nor Russia, Cube, Venezuela, Vietnam nor North Korea are in any way communist. The only connection these nations have to Communism is that the dictatorial class which controls these countries uses the brand of communism to justify its reign. This is not unlike the oligarchy which dominates the USA and Russia who dangle the potential of being a millionaire as a carrot to there workers so that they can continue to exploit them for there own personal gain.
