1x22 - The Last Immortal

As Yin's life is about to end, the God Elixir made by Gu Jin proves ineffective. Frantically, Gu Jin takes Yin to Mount Ziyue, where he learns from Bi Bo that the making of the God Elixir requires a large amount of demon pith. Despite Bi Bo's reluctance for Gu Jin to take risks, he resolutely enters the Nine Abyss Purgatory.