The ancient road in "Three Passes of the Ancient Road" refers to the geographical location of Shanxi merchants in those days. This place is located in the northwest of Shanxi, the north gate of Shanxi, the blending place of agricultural civilization in the Central Plains and nomadic civilization in the north, and the main channel for the spread of Shanxi merchant culture. The ancient road symbolizes the ancient Taoist health theory: medicine tonic is not as good as food tonic, and inherits the cultural concept of the homology of Chinese medicine and food in Huangdi Neijing and Compendium of Materia Medica. "The ancient road is three clear", that is, fresh, pure in heart and three high-purity. Sanqing culture combines China's traditional Taoist thought: Taoism gives birth to one, two, three and everything. Everything is negative and holds yang, and it is harmonious. Sanqing culture is also the highest realm of Taoism; At the same time, it implies the efficacy of Sanqing.