Dragon-side tooth

In King Xin Inheritance, a hairy man trial hands Fang Yuan Gu and materials for a winner-lives refinement duel. ^{ch. 356} The materials are grand white moon gold, skull stones, dragon-side tooth, young autumn grass, fifty primeval stones, a flower boar Gu, and a boar cage Gu. The inheritance does not name which Gu must be refined from that bundle. Fang Yuan sees three possible recipes, watches a hairy man begin a refinement, distracts that hairy man until the attempt fails under heavenly power, then collects the materials and moves on without finishing a refinement from the bundle in the chapter. ^{ch. 357}