Abstract
This chapter argues that ZHU Xi was influenced by Daoism. His philosophy begins with the Diagram of the Great Polarity or Taijitu 太極圖 which has Daoist origins. Later in life he studied two Daoist texts, namely, The Seal of the Unity of the Three in the Zhou Book of Changes or the Zhouyi Cantongqi 周易參同契, and The Yellow Emperor’s Classic of the Secret Talisman or the Huangdi Yinfujing 黃帝陰符經. The chapter begins with a discussion about the nature of Daoism and inner meditative alchemy. Then I discuss the Diagram of the Great Polarity. Finally, ZHU Xi’s study of the above two texts is analyzed.