The "Simplicity is Ultimate Sophistication" mental model emphasizes understanding and solving complex problems through simple methods and principles. At its heart lies the recognition that the fundamental laws governing things are inherently simple. It advocates cutting away the superfluous and returning to origins, thereby achieving goals more efficiently. The core of this model is the "Dao"—the objective laws underlying nature and human society. It promotes using clear, concise principles to explain profound ideas, extracting the intrinsic patterns of development through careful observation, continuous learning, and deep reflection, enabling people to achieve significant results in a shorter time. This model does not advocate superficial simplification, but rather, through deep insight into complex systems, reveals their most refined and essential form—achieving higher wisdom and efficiency.