The Jiuguozhi 九國志 "Records of the Nine States" is a history of nine of the Ten States 十國 (902-979) that ruled in southern China after the end of the Tang dynasty 唐 (618-907). The 12 juan "scrolls" long book was compiled by the Song period 宋 (960-1279) scholar and writer Lu Zhen 路振. Lu Zhen started collecting biographies of the ministers and high officials of the southern states, which he then planned to put together to a book. His work was unfinished when he died. The draft was nevertheless printed and served Ouyang Xiu 歐陽修 for his compilation of the Xin Wudaishi 新五代史.
The Jiuguozhi is not included in the Siku quanshu 四庫全書, but in the collectanea Haishanxianguan congshu 海山仙館叢書.
Source: Li Xueqin 李學勤, Lü Wenyu 呂文鬰 (1996). Siku da cidian 四庫大辭典, vol. 1, p. 1050. Changchun: Jilin daxue chubanshe.