The hundreds of thousands of mountains in southern Xinjiang are filled with miasma, and everything can be refined into Gu. Fang Yuan, a Gu master who was chased by the right way to a desperate situation, awakened the "Gu Evolution Illustrated Book" at the moment of life and death. In his eyes, all Gu insects in the world have evolutionary paths: a humble corpse-eating beetle can evolve into a soul-eating golden corpse, and an ordinary green bamboo snake can transform into a sky-swallowing netherworld python.
In order to survive, Fang Yuan deployed a deadly poison formation in the depths of the jungle, chewing up the enemies who surrounded him into bones. He watched life and death with a cold eye and regarded all things as sustenance. Sneaking into a hostile tribe, he spread the plague and took advantage of the chaos to plunder the clan's treasures. In this eerie Gu world, Fang Yuan used heaven and earth as the melting pot and all living beings as nourishment, step by step he refined the legendary No. 1 Gu in heaven and earth, and embarked on the path of eternal immortality.
