Round three, round four, round five. The third, fourth and fifth rounds of Taiwan Province liquor brewing are collectively called "Big Grey Liquor". High yield and high quality is an important "cornerstone" to achieve high quality and stable production of Maotai throughout the year. These three rounds of production accounted for more than 60% of the annual base wine production, and it was also a round of concentrated production of typical maotai-flavor products throughout the year. Maotai's seven rounds of wine have their own characteristics. The aroma of the first round and the second round is good, one round is rich and the second round is fresh. The sixth and seventh rounds of wine taste good, mellow and soft is its main feature; The third, fourth and fifth rounds in the middle are "big drinks", and the aroma is just right, each with its own characteristics. Maotai liquor is a specialty of Maotai Town, renhuai city, Zunyi City, Guizhou Province, a symbolic product of chinese national geography, a traditional characteristic liquor of China, one of the three famous liquors in China, and the originator of Daqu Maotai-flavor liquor with a history of more than 800 years.