Protecting the mountain from poachers

For 22 years, Yu Jiahua has spent several days each month patrolling a mountain looking for poachers in Southwest China's Sichuan province. Mount Jiuding, a 10-minute walk from Yu's village, is surrounded by hundreds of square meters of forest and is home to many wild animals.

"In the 1960s, there were hundreds of thousands of wild animals," he said.

The 65-year-old can identify animals just by their footprints and his family also used to hunt. "We hunted birds and animals, but we had rules," he said. "We never hunted young or female animals."