Tài shàng dòng xuán Líng bǎo Tiān guān jīng 太上洞玄靈寶天關經
Most High Dòngxuán Língbǎo Scripture of the Heavenly Barrier
Anonymous; Táng
A Táng Daoist scripture on the Heavenly Barrier (tiān guān 天關) — the cosmological threshold between the mortal and celestial realms. Preserved as DZ 987 / CT 987 (Tài xuán bù 太玄部).
Dating. Táng. Dynasty: 唐.