What level does the Gelao nationality's wine-making technology belong to?

According to the "Puzu Jing", the indigenous people along the Chishui River in ancient times were good at making wine. "Pu" is also called "Liao". In the Ming dynasty, it was often called "Gelao nationality", and its descendants were the present Gelao nationality. In ancient times, Pu people brewed a sweet and delicious wine called "gourd sauce", and the brewing process of Maotai actually adopted the brewing process of Gelao people.