Hygiene
Shenzhen has many of these neighborhood-level trash stations, where trash collected by the street sweepers is consolidate to be carried away in trucks. They smell--especially in the summer-- and provide a slipper experience if someone were to actually walk on the sidewalk near them. Shenzhen has taken steps to make these stations less of an eye sore and smell factory through newer designs, better equipment and better cleaning protocols.
I forget where this photo was taken. Photo from 5 years ago.










