Mid-Tang scholar-monk and exegete, lifedates 717–777 (DILA A000540: born Kāiyuán 5 = 717; died Dàlì 12 = 26 April 777, age 61, with 29 summer-rains in monastic seniority). Native of Yúxiāng 虞鄉 in Pǔzhōu 蒲州 (modern Yùcháng County of Shānxī).
His major work is the present Rénwáng hùguó bōrě bōluómìduō jīng shū 仁王護國般若波羅蜜多經疏 (T1709 = KR6c0208), composed at the explicit request of 不空 Amoghavajra to accompany Amoghavajra’s revised translation of the Rénwángjīng (T246 = KR6c0203, completed 765–766). Liángbì’s commentary is therefore the canonical Tang esoteric-circle commentary on Amoghavajra’s revised Rénwángjīng, complementing the earlier Suí-Tang commentaries by 智顗 (T1705), 吉藏 (T1707), and 圓測 (T1708).
He died at Fúyáng 符陽 in Dàlì 12 (777), thirteen years after Amoghavajra. The Sòng gāosēng zhuàn (T2061, j. 5) preserves his biography. He represents the mid-Tang scholar-monk tradition that supported Amoghavajra’s esoteric-Buddhist programme with substantial doctrinal commentary, providing the Buddhist canonical authority for the state-protective rituals that Amoghavajra was constructing under Tang Dàizōng patronage.