Destroy the Evil Corpse Immortal

An unparalleled method that only by slaying evildoers can one become stronger. A handsome boy who holds a high position in a cult but is kind-hearted. A soul-stirring legend of cultivating immortality. Three years ago, the Xuan Yin Sect, a notorious cult in the world of cultivation, had an elder of unknown origin. This elder looked to be only three or four years old, and his cultivation level was not high, but he was the best at refining corpse puppets. However, he never imagined that the corpse puppet he refined would bring about a terrifying catastrophe... Who will stop this catastrophe? What is the true identity of this elder?