Travel to countries that are/have rapidly industrialized reminds one that clean air and water are worth protecting and not to be taken for granted.
Dirty air and water view
This is improving though and steps are being taken whose results should be watched for possible replication.
Electric car charging infrastructure is far more developed in China than anywhere else I’ve seen. This is a row of car charging station outside my hotel. However I have still never riden in an electric car.
Bike shares are extensive in China but I also see a lot of abandoned bikes by the side of the rode so not sure if this is cost effective.
Efficient and reliable mass transport is one of the biggest things we can’t seem to replicate that other countries have figured out.
Nice train stations with all your favorite amenities.
Also lots of city green space.