Questions and Replies between Emperor Taizong of Tang and Li Weigong (Chinese: 唐太宗李衛公問對) is a fictional dialogue between Emperor Taizong (AD 599–649) of the Tang dynasty and Li Jing (571–649 AD), a prominent Tang general. It discusses matters of military strategy, and is considered to be one of the Seven Military Classics of China. Source: Wikipedia (en)