Bronze Bu (wine vessel), Shang Dynasty (c. 16th-11th centuries BC), King Wu Ding's reign, unearthed from tomb of Fu Hao at Yinxu, Anyang, Henan Province, 1976. It is exhibited in the section of Exhibition on life, production in Xia, Shang and Western Zhou dynasties, an exhibition of Ancient China in the National Museum of China. [Photo by Xu Lin / China.org.cn]