"Wang Chongyang's Treatise on the Three Treasures" is a foundational text in Daoism, written by the influential figure Wang Chongyang in the 12th century. The treatise discusses the concept of the "Three Treasures," which are jing (essence), qi (vital energy), and shen (spirit). These elements are essential for achieving spiritual cultivation and longevity. In the treatise, Wang emphasizes the importance of balancing and nurturing these treasures to attain harmony within oneself. He provides practical guidance on meditation, breathing techniques, and lifestyle choices that support the cultivation of these vital energies, contributing to both physical health and spiritual enlightenment.