In August of 1994, Xinxiang Municipal Archaeological Team and Weihui Municipal Museum excavated Niwan site in Weihui city, Henan province and found remains of the late Longshan culture including house foundations, ash pits and various arti facts.

• 1994年8月,为配合京深(北京-深圳)高速公路建设,新乡市文物工作队和卫辉市博物馆联合发掘了卫辉市倪湾遗址,发现了属于龙山文化晚期前、后两段的遗存。