Deep in the protected river lands of Guizhou, China,
在中國桂林被保護的河谷深處,
a forest ranger has forged a special relationship with some of the rarest monkeys in the world.
一位護林員和一群世界上最為罕見的猴子發展了一段特別的關系。
Xiao is tasked with monitoring the monkeys.
肖的工作是看護這些猴子。
It has taken decades of patience to build a mutually trusting relationship with them.
他花了數十年的時間才和它們建立了互相信任的關系。

Over the past 20 years,
在過去的二十年里,
Xiao has become an expert in the group's rituals and behavior
肖已經熟練掌握了這群猴子的行蹤和活動習慣,
and has given scientists unique insight into the species.
讓科學家們也能窺見這個物種的面貌。
Under his care, Xiao has seen the number of his group increase,
在肖的精心照料下,猴群的規模正在擴大,
but the species remains endangered.
但這個物種目前仍面臨著滅絕的危險。