Xuán zhēn zǐ (wài piān) 玄真子(外篇)

Master of Mysterious Perfection (Outer Chapters)

by 張志和 (Zhāng Zhìhé, c. 730–810)

The received (“outer chapters”) of Zhāng Zhìhé’s Daoist philosophical-cosmological treatise, in three juàn (Bì xū 碧虛, Yín suǒ 鸑鷟, Tāo xū 濤之語). The “inner chapters” (nèi piān 內篇) are lost. Preserved as DZ 1029 / CT 1029 (Tài xuán bù 太玄部).