Analysis of information sources in references of the Wikipedia article "Yangshao culture" in English language version.
A clay mask of a human head, 10 cm in height, was found at Liujiahe in Ankang, southern Shaanxi (Shaanxi Institute 1998: 5), and dates to the Miaodigou phase of the middle Yangshao period (Wang Weilin 2002, personal communication). This realistically rendered sculpture has a long and large nose, deep eyes and narrow face. Each ear has a small hole, perhaps for wearing earrings. Another hole is placed on top of the head, probably for inserting a headdress. The back of this mask is concave in shape and two additional small holes are situated on the sides of the rear head, suggesting that the mask may have been attached to another object (Figure 4.11: 1). These two human heads clearly show Caucasian characteristics. (...) Most examples of Caucasoid figures as described above have been found in Fufeng near the Wei River, although their dates stretch from 4000 BC to 1000 BC. The Wei River valley is a region in which ethnic groups from west and east made contact with each other throughout history, thus it is entirely possible that such contacts had already taken place in prehistory.
The early cultural exchanges between the East and the West are mainly reflected in several aspects: first, in the late Neolithic period of painted pottery culture, the Yangshao culture (5000-3000 BC) from the Central Plains spreadwestward, which had a great impact on Majiayao culture (3000-2000 BC), and then continued to spread to Xinjiang and Central Asia through the transition of Hexi corridor
The early cultural exchanges between the East and the West are mainly reflected in several aspects: first, in the late Neolithic period of painted pottery culture, the Yangshao culture (5000-3000 BC) from the Central Plains spreadwestward, which had a great impact on Majiayao culture (3000-2000 BC), and then continued to spread to Xinjiang and Central Asia through the transition of Hexi corridor