Li Jing (570-649 AD), Tang Dynasty general and purported author of "Duke Li of Wei Answering Emperor Taizong of Tang" 唐太宗李衛公問對|唐太宗李卫公问对[Tang2 Tai4 zong1 Li3 Wei4 Gong1 Wen4 dui4], one of the Seven Military Classics of ancient China 武經七書|武经七书[Wu3 jing1 Qi1 shu1]