Mrs Zhang, 68, sorts waste plastics into different piles at a trash collection and recycling area on the edge of central Wenzhou.
She says: "I often do not make enough money to eat. I earn no more than 10 RMB ($1.24) per day, sometimes as little as RMB 3 a day."
Her home does have electricity, but her water comes from a well. "Although we know it's polluted, there is nothing we can do," she says.