關鍵字: 坐忘；重玄學；莊子；成玄英；司馬承禎

Abstract: This paper aims to explore the doctrinal evolution and religious significance of the concept of "zuowang" (sitting in oblivion) within its interpretive trajectory from Zhuangzi to the Tang Dynasty. Zhuangzi's "sitting in forgetfulness" (zuowang) constructs a path of embodying the Dao that transcends physical form and cognition, an idea that provided the ideological gene for the Chongxuan (Double Mystery) school.In the Tang Dynasty, Cheng Xuanying absorbed Guo Xiang's "double negation" theory and Buddhist Madhyamaka thought to propose the "threefold negation through double abandonment" theory, employing triple negation to deconstruct attachments to existence/non-existence and language/images. He redefined oblivion as the essence of Double Mystery philosophy while imbuing his commentary on "sitting upright and forgetting" with Daoist cultivation implications. Sima Chengzhen further ritualized "zuowang" by systematically expounding a seven-stage cultivation method in his Zuowang Lun (Treatise on Sitting in Oblivion), returning to Daoist immortality practices and facilitating the transformation of Double Mystery studies from metaphysical speculation to religious praxis. The research demonstrates that the evolution of "zuowang" reveals the core value of Lao-Zhuang philosophy in constructing Daoist doctrines and the systematization of Daoist philosophy, while reflecting the developmental trend of Buddhist-Daoist syncretism, offering new perspectives for understanding the transformative development of Daoism.

Key words: sitting and forgetting (zuowang); Chongxuan learning; Zhuangzi; Cheng Xuanying; Sima Chengzhen