Bai Lie and Qian Mu are collectively known as the "Two Elders of the Thousand Hundred" and are the guardians of Jia Nan Academy. They only appear when the academy faces a real crisis. When they first appeared, they were both at the peak of the Dou Zong level.
(Source: Baidu Baike, translated)
Content compiled by AnimeList.moe from publicly available sources.
