Modao main fermentor has been used continuously since 1984, and the average pit age has reached more than 30 years. The body of Modao wine is a flavoring wine blended with more than five years' original wine and more than eight years' original wine selected by Sichuan Development Pure Grain Original Wine Equity Investment Fund. In addition, the microorganisms in the wine cellar used for Modao continuous fermentation have formed a good ecosystem for many years, and their microbial communities are numerous and huge, which makes Modao 19 15 wine have quite good flavor and taste.