Largest number of jade wares go in display in Sichuan

A cong, a hollow piece of jade with rectangular sides dating back to the Xia Dynasty (c. 21st century-16th century BC) and Shang Dynasty (c. 16th century-11th century BC) are on display in the Jinsha Site Museum in Chengdu, Sichuan province. [Photo provided to www.chinadaily.com.cn]