Old Culture Vs. New Culture

Greetings,

                I just wish to know from part of those that have been in china how different if so,

Is the new Chinese generation from their older? I did read an entered book of Chinese customs and courtesy but for the most part upon my experience have notice that most of it are not utilized or followed by the new generation.  Please comment it would be interesting to know how china cultures its constantly changing.

Best regards,

Chris