It is said that the liquor brewing techniques in Maotai Town are all traditional techniques. Are there any details?

Not necessarily every family, it depends on the manufacturer and brand. The Tongyuanmeng wine industry I know is based on the local red tassel sorghum wheat and Chishui River. Brewing technology of "12978". "12978" refers to the whole production cycle of Dragon Boat Festival koji-making, Chongyang feeding, secondary feeding, eight koji-adding, nine distillation and seven wine-taking, which lasts for one year! The wine brewed in this way, after at least 3 years of storage and repeated blending, can achieve outstanding sauce flavor, delicate wine quality and lasting fragrance in empty cups.