An archaeological worker shows an ancient pottery wind instrument at Xiaoli village in Baixiang county, north China's Hebei province, Aug. 30, 2010. Since June, archaeologists have unearthed abundant cultural relics at the village's Yangshao site, dating back to 5,700 to 6,300 years ago. (Xinhua/Gong Zhihong)

An archaeological worker shows an ancient earthen bowl at Xiaoli village in Baixiang county, north China's Hebei province, Aug. 30, 2010. (Xinhua/Gong Zhihong)