Example image of eyePlorer eyePlorer map for 'Qijia culture': 19th century BC 24th century BC Bronze Age China Gansu Lanzhou Qinghai Yellow River Johan Gunnar Andersson Bronze mirror Lajia Kwang-chih Chang List of Chalcolithic cultures in China Banshan Zhukaigou culture Fork Chinese noodles Mirror List of Chinese inventions Domestication of the horse