The Zuowanglun or Zuowang lun is a Taoist meditation text that was written by the Shangqing School patriarch Sima Chengzhen (647–735). Taoism incorporated many Buddhist practices during the Tang Dynasty (618–907), and the Zuowanglun combined meditation techniques from Taoism (e.g., 坐忘 zuòwàng "sitting forgetting", and 觀 guān "observation") and Buddhism (śamatha "calm abiding", and vipaśyanā "insight").