Yán líng xiān shēng jí xīn jiù fú qì jīng 延陵先生集新舊服氣經

Master Yán líng’s Collected Scriptures of New and Old Pneumatic-Consumption

compiled by 桑榆子 (Sāng yú zǐ); Five Dynasties

A Five-Dynasties compilation of old and new qì 氣-cultivation texts by Sāng yú zǐ 桑榆子 (hào “Master Mulberry Elm”), nominally presenting the teachings of Yán líng xiān shēng 延陵先生. Preserved as DZ 825 / CT 825 (Dòngshén bù, Jiè lǜ lèi 洞神部戒律類).