 Ji Kang’s extant writings include a collection of sixty poems, an influential “Rhapsody on the Zither” (Qin fu), and fourteen other essays. The concept of ziran underpins Ji Kang’s version of Neo-Daoism. In agreement with He Yan and Wang Bi, Ji sees an inherent order in the universe. The origin of the Daoist world is to be understood in terms of the transformation of qi. The “original qi,” brimming with creative energy but completely undifferentiated, gave rise to yin and yang, from which heaven and earth, the five dynamic elemental forces (wuxing), and the myriad beings in turn ensued. Boundless but not reducible to any shape or form, the Dao can be described as wu, but in this interpretation, the nothingness of Dao gains meaning from the original oneness of qi. In this respect, Ji Kang seems closer to He Yan than Wang Bi in drawing from the yin-yang cosmological theory, though there is perhaps a stronger religious sensibility that distinguishes Ji’s approach to the profound mystery of Dao.