Kong Anguo,Kong Zhong's son and the eleventh generations of grandsons of Confucius and was a expert in clssics, lived in Lu state in West Han Dynasty. It is not quite clear when he was born. When he was young, he learned the "Book of Poetry" from Shen Pei. It is said that Shang Shu which is more 16 verses than the modern Shang Shu was found when King Gong, Liu Yu, built his palace and demolishded Confucius residence.