Qingyu, referred to as "Sifa Xiaoshi Qingyu Jiaokan," was a Buddhist monk and scholar of the Tang Dynasty. He is known for his work on the *Mahāprajñāpāramitā Sūtra*, specifically for his collations and textual revisions.
Recorded Sayings of Chan Master Danxia Zichun (丹霞子淳禪師語錄)