Beyond the Great Wall of China lies an even greater one: the Greater Hinggan Mountains – a frozen wilderness where winter temperatures can drop as low as minus 50 degrees Celsius and snow blankets the forests deep. Only those born for the extreme can call it home: the reindeer. But in this icy kingdom, they were never alone – the Evenki people have always been their allies. For centuries, their bond with the reindeer has shaped a unique culture in this frozen land.