The publicized Shanghai Museum bamboo slips serve as the primary form of literature from the Chu state and the period of the Warring States. The invaluable information they contain profoundly helped modern civilization to understand the historical facts of the Warring States period. The topic of this dissertation is "The Chu State's Bamboo Slips of the Warring States Period collected by the Shanghai Museum: a case study on "Zong Gong"." The historical value of the differences in duties as a 'Jia Zai' for Zong Gong and a 'Jia Zai' in China's Spring and Autumn period will be discussed. The research into this topic turned up the following: First, according to "Confucian Analects", Zong Gong served as 'Zai' to the Chi family. Zai here stands for 'Jia Zai' which means chief minister. Second, the position of 'Jia Zai' in the Spring and Autumn period gives one the status of 'Shi Lao' or 'Zong Lao,' which means the elder member of a patriarchal clan as well as the person who manages the internal and external affairs of the clan. Both of the above-mentioned findings can supplement the insufficient literature and show the value of research facts.