Snub-nosed monkeys better with more trees

Snub-nosed monkeys are known to be genteel and affable - even when they make a tooth-baring face, they are really showing fondness.

But it still took Yang Jingyuan's team years of effort before the monkeys let down their guard and let themselves be known.

Yang, head of the Research Institute of Shennongjia Nature Reserve, has worked on the mountain range for nearly two decades.