Li Jing

Li Jing led a Tang army of 100,000 men in a surprise attack against the Eastern Tujue Khaganate. He captured the khagan, Jiali Khan, near the Yin Mountains. This decisive victory destroyed the Eastern Tujue state and brought its territories under Tang control.

Li Jing commanded a Tang expedition against the Tuyuhun kingdom in the Qilian Mountains. He employed a strategy of rapid pursuit across difficult terrain, forcing the Tuyuhun ruler to flee. The campaign resulted in the submission of Tuyuhun to Tang suzerainty.

Emperor Taizong appointed Li Jing as Grand Chancellor (Shangshu You Pushe) and granted him the title Duke of Wei. This recognition honored his military achievements and placed him among the highest officials of the Tang court. He served in this role until his retirement.

Li Jing is traditionally credited as the author of the military treatise 'Questions and Replies between Tang Taizong and Li Weigong' (Li Weigong Wendui). This work, presented as a dialogue with Emperor Taizong, discusses military strategy, tactics, and historical battles. It became a classic of Chinese military literature.