High in Xizang's Shannan City, a team of forest rangers protects the land's wildlife – especially the endangered red deer. Each day, they patrol on foot and by motorcycle, often walking for hours above 4,000 meters above sea level. They face unpredictable weather and the risk of encountering wild beasts like bears. Yet their reward is simple: seeing the deer thrive under their watch. For them, protecting nature is not a job – it's a calling.