with life. The content of the book revolves around the practice of inner cultivation, exploring themes such as the nature of Dao, De, Qi, and essence. It discusses how these elements can be cultivated through meditation and self-regulation, guiding the reader toward achieving harmony and clarity within themselves. The text outlines methods for calming the heart/mind, emphasizing the significance of overcoming disturbances such as love, anger, and desire for profit, which are viewed as barriers to achieving a true and complete sense of self. Ultimately, it serves as a manual for achieving personal peace and understanding through the cultivation of one's inner nature. (This is an automatically generated summary.)