Second, Zuozhuan and Guoyu in the Spring and Autumn Period
Iii. Hanshu in the Han Dynasty
Four, the Xia Dynasty's "Bamboo Annals" and "Xia Zhengxiao"
Five, Zhang Taiyan's "Xiao Jing Ben Xia Fa Shuo"
Six, the Qin Dynasty's "Sleeping Tiger Land Qin Tomb Bamboo Slips"
Seven, historical records of past dynasties are works of Chinese legal history.