Frozen for thousands of miles and surrounded by hungry wolves, Luo Chuan survived on the snowy field with a group of half-clothed savages. Iron tools, fishing nets, adobe houses, the marriage system... He planted thousands of years of civilization in later generations bit by bit into this wilderness. The tiger lay at his feet and snored, and the savage girl squatted by the fire pit, waiting for him to drink soup. He didn't know if he could survive this winter, but he knew that as long as the bonfire did not go out, these people would not disperse...