Yaoshan Weiyan

Yaoshan Weiyan was a Chan teacher traditionally placed in Shitou Xiqian's lineage. His disciples included Yunyan Tansheng, through whom later genealogies trace the Caodong tradition.

藥山惟儼 · 唐 · 746-829

Also known as: 惟嚴、弘道大師、藥山唯儼、藥山惟嚴、唯儼