唐太宗李卫公问对/ 唐太宗李衛公問對 tángtàizōnglǐwèigōngwènduì The Questions and Replies between Emperor Taizong of Tang and Li Weigong
A famous military treatise attributed to the general 李靖 lǐjìng and included as one of the Seven Military Classics of ancient China, the 武经七书 wǔjīngqīshū