Picturing the changes among China's last gun tribe

Photographer has captured almost three decades of development in a once remote village where firearms are key

Kuang Huimin, from Hengshan, Hunan province, is a documentary photographer who focuses on topics such as environmental protection and social change.

Since 1989, the 52-year-old has been visiting a village in Southwest China's Guizhou province, where he has taken more than 80,000 photo for his book Changes in Biasha.