The Yangshao culture (仰韶文化, pinyin: Yǎngsháo wénhuà) was a Neolithic culture that existed extensively along the middle reaches of the Yellow River in China from around 5000 BC to 3000 BC. The culture is named after the Yangshao site, the first excavated site of this culture, which was discovered in 1921 in Yangshao town, Mianchi County, Sanmenxia, western Henan Province by the Swedish geologist Johan Gunnar Andersson (1874–1960). The culture flourished mainly in the provinces of Henan, Shaanxi and Shanxi. Recent research indicates a common origin of the Sino-Tibetan languages with the Cishan, Yangshao and/or the Majiayao cultures. Economy Subsistence The main food of the Yangshao people was millet, with some sites using foxtail millet and others proso millet, though some evidence of rice has been found. The exact nature of Yangshao agriculture, small-scale slash-and-burn cultivation versus intensive agriculture in permanent fields, is currently a matter of debate. Once the soil was exhausted, residents picked up their belongings, moved to new lands, and constructed new villages. Middle Yangshao settlements such as Jiangzhi contain raised-floor buildings that may have been used for the storage of surplus grains. Grinding stones for making flour were also found. The Yangshao people kept pigs and dogs. Sheep, goats, and cattle are found much more rarely. Much of their meat came from hunting and fishing with stone tools. Their stone tools were polished and highly specialized. They may also have practiced an early form of sericulture. Crafts The Yangshao culture crafted pottery: Yangshao artisans created fine white, red, and black painted pottery with human facial, animal, and geometric designs. Unlike the later Longshan culture, the Yangshao culture did not use pottery wheels in pottery-making. Excavations found that children were buried in painted pottery jars. The Yangshao culture produced silk to a small degree and wove hemp. Men wore loin clothes and tied their hair in a top knot. Women wrapped a length of cloth around themselves and tied their hair in a bun. Houses Houses were built by digging a rounded rectangular pit around one metre deep. Then they were rammed, and a lattice of wattle was woven over it. Then it was plastered with mud. The floor was also rammed down. Next, a few short wattle poles would be placed around the top of the pit, and more wattle would be woven to it. It was plastered with mud, and a framework of poles would