As I understand it, China just has cameras on every street because their goal is to decrease traffic violations and not just generate ticket revenue.
This is correct. Traffic cameras are present on basically every street, and they are highly visible, preceded by a road sign, and your GPS audibly tells you about them. They also flash at you.
China also has a better implementation of red light cameras. Green lights start flashing a few seconds before they turn yellow, allowing you to either make it across the intersection or slow down in time.