This paper examines the ancient bamboo text “Gucheng jiafu,” a section taken from the fifth volume of the Shanghai bowuguan cang zhanguo Chu Zhushu (the Shanghai Museum’s collection of Chu Bamboo strips). The text records the power strugglebetween the Jin artistocrats Luan Shu and the “San Xi” (three brothers of the Xi family: Xi Qi, Xi Chou, and Xi Zhih) in the mid-Spring and Autumn period. The purpose of this paper is threefold: first, to reconsider the sequential order of the bamboo strips; second, to furnish a new interpretation of “Gucheng jiafu” on the basis of a revisionist critique of existing exegesis; and finally, to conduct a philogical inquiry into some of the unknown chracters in the text, including xian 憲, xun迅, baidi白狄, chuguan處官, guo過, shi世, chenghanyiziyujin顑頷以至於今, faduoniuda代多狃達,buniuyuwugu不狃於吾故, qiezigongsuo 竊自公所, gongyinwanggao公因亡告and kumendaf庫門大夫. In addition, I provide my own modern transcription of the text, in which the text is fully I provide my own modern transcription of the text, in which the text is fully punctuated and presented in standard Chinese characters.