I was surprised by the steps to keep China clean and energy-efficient.
First, many stores don't give out plastic bags. You have to bring your own or buy a re-usable one like this one for 1 kuai (about 15 cents).
Then, at least on or after a reasonably sunny day, I take my hot shower with water from a solar-heated tank on the roof of my building, like this one here:
Other things include electric scooters (very few loud motorbikes here!) and of course bicycles... I was thinking there was something else that caught my attention, but it's not coming to me at the moment...