How long will it take the Qiang people to refine the secret processing technology?

1 month. As one of the four schools in China, the processing technology of Qiang traditional Chinese medicine covers Sichuan, Chongqing, Yunnan, Guizhou and other southwest areas of China. Its processing technology was formed in the heyday of Ming and Qing Dynasties, and its theory and practice mostly followed Lei Gong's baking theory and Zheng Ben Cao. According to relevant information, it is difficult to refine the secret craftsmanship of Qiang people in one month.