Ben shu shixi tong fen xi shi kao shi da gang de bu fen nei rong de xiang xi jiang jie, Shi duixi tong fen xi shi jiao cheng de bu chong. Quan shu fen 15 zhang, Nei rong bao kuo:xi tong ji hua, Xu qiu fen xi yu ding yi, Xi tong she ji, Ruan jian she ji, Ruan jian ce shi deng.