The Immortal Demon Grotto is an ominous place, that exists at least since the Desolate Era. Legend has it that an evil demon exists there, who instantly devour any trespasser. No one had ever made it out of the Grotto alive.
Several years later, shortly before becoming an Immortal Emperor, Li Qiye returned to the Grotto. He wanted to get the Longevity Grass, but found only dying Xiao Shi. Li Qiye burried him in the Grotto.
- Longevity Grass (formerly)