Bei Kun Bai Wan Nian: Dizi Bianbu Zhu Tian Wan Jie

A young immortal named Lu Chen was confined in the Land of Desolation for more than ten million years. After careful planning over countless centuries, he escaped, only to discover a world that had changed dramatically. The Old Continent had fragmented into many parts, the North and South Poles had swapped places, and nine suns had been reduced to one. The oceans had dropped in level, and prehistoric creatures had nearly vanished. Humans, once a small tribal group, now ruled the Earth. Additionally, a stray dog he had taken in had become a sect leader, a girl he had adopted had become a fairy in a heavenly realm, and a disciple he had reluctantly accepted had risen to become the Celestial Emperor.