Exhibition introduction: Due to the immigration and farming policy implemented in Guizhou during the Han Dynasty, which promoted the development of agriculture, handicrafts and commerce in Guizhou, doctors in the brewing industry in Guizhou used a new double fermentation process to make artificial koji. Tang Meng took a boat along the Chishui River as an envoy to Maotai and saw countless wine jars on both sides of the strait. It can be seen that Guizhou's wine making industry was quite developed at that time.