The Sino-Tibetan language family consists of more than 400 languages spoken by around 1.4 billion speakers worldwide, including major world languages like Chinese, Tibetan and Burmese. However, despite the importance of these languages for understanding the prehistory of East Asia, their relationships and origins remain controversial. A study by an international team provides new evidence for the origin of the language family, pointing to Sino-Tibetan originating with north Chinese millet farmers around 7,200 years ago.