Recent studies in comparative-historical linguistics and genetics have provided valuable insights into the origins and flourishing of the Sino-Tibetan language family, one of the largest in the world. Evidence suggests that this linguistic group emerged and thrived approximately 8000-5000 years ago in the Yellow River valley, north China. Notably, the divergence of proto-Sino-Tibetan languages occurred around 5900 years ago. These significant linguistic shifts coincided with archaeological findings that point to the development of the Yangshao culture and its expansion towards the Tibetan Plateau, in both westward and southwestward directions. The Yangshao culture, renowned for its centripetal settlement layouts, large public buildings, highly developed painted pottery, and the use of amphorae for producing and consuming alcoholic beverages, fostered a culture of communal ritual feasts. These communal feasting activities played a crucial role in establishing diverse social relations and reinforcing cultural identity through the production, processing, and sharing of food and alcoholic beverages. This practice emphasized collaboration and connections among related groups during the expansion of proto Sino-Tibetan populations into new territories, occurring amidst a period of climatic fluctuations.