The latest case took place in Guizhou, a province in the south of China’s interior.

China began offering legal remedies against polluters two years ago, when it established environmental courts in the provinces of Guizhou, Jiangsu, Yunnan and Shandong.

One volunteer, a 38-year-old woman surnamed He (she would not give her full name), took up the case in Guizhou, a poor province in southern China where kidnappings are common.

At the other extreme, the poorest province, Guizhou, has an income per head close to that of India.

A journey back home - For these child beggars from Guizhou, days of begging in Nanning will become part of their memories.