This chapter explores the concept of “the unity of Heaven and man,” tracing its origin to Dong Zhongshu and earlier traditions. Moving beyond the notion of mere interaction between nature and humanity, it emphasizes a moral correspondence—a resonance between human virtues and natural laws. Rejecting both submission to nature and its domination, this concept advocates harmonious coexistence grounded in reverence and balance. Through examples such as water and bamboo, the chapter illustrates how Chinese culture draws ethical inspiration from nature’s patterns. In contrast to Western anthropocentrism, Confucian humanism recognizes human initiative while maintaining profound respect for natural law. This harmony between moral self-cultivation and ecological awareness constitutes a distinct Chinese form of humanism. In the modern context, the idea of the unity of Heaven and man offers valuable insights for addressing today’s environmental and ethical crises, promoting diversity, dynamic balance, and sustainable coexistence between humanity and the natural world