I love this video: https://youtu.be/9kNRtd-q8Rk.

Been there only once, to Shanghai and Suzhou. (which means my experiences are limited)

My impression is that young people in urban areas are fine. They are generally friendly and not aggressive, contrary to the stereotype. Many of them are open to try new things, different cultures etc. 

I felt people tended to become more temperamental and rough as you go farther from the "modernized areas". A quarrel can break out over a tiny issue, which will quickly escalate into a screaming match. Maybe that's normal in certain parts of China, I have no idea.

Also, I sensed during my travel that people might be concerned about where they were are within the societal hierarchy. Lack of respect as humans towards cleaning staff in public areas, for example. 

I am very curious as to what local Chinese think though. 

Manual operations are becoming increasingly mechanized.