The Department of Beiji ng University and Zhengzhou Munici pal Institute of Cultural Relics a nd Archaeology began their trail e xcavation at Xinzhai site in Xinmi city, Henan province in 1999 The excavation has revealed cultural la yers and a large amount of materia l remains The second phase of the site, succeeded the Longshan cultu re,had a strong relationship with the Erlitou
