唐太宗李卫公问对 tángtàizōnglǐwèigōngwènduì The Questions and Replies between Emperor Taizong of Tang and Li Weigong
A famous military treatise attributed to the general [[李靖|李靖|li3 jing4]] and included as one of the Seven Military Classics of ancient China, the [[武经七书|武經七書|wu3 jing1 qi1 shu1]]