Ancient Shangzhai people consumed broomcorn millet, meat and dairy of ruminants during the Middle to Late Neolithic

As the crossroads of prehistoric cultures, the Beijing region is an important area for studying the exchange of prehistoric culture and the spread of millet agriculture, while there is a gap of approximately 2,000 years between millet remains founded in the Neolithic sites (the early Donghulin site and the late Shangzhai site).