The Tuqi King (Chinese: 屠耆王; pinyin: Túqí wáng; Wade–Giles: T'u-ch'i wang) was a high office of the Xiongnu, a title also known to the Chinese as "worthy/wise prince/king".[1][2] In the 6th to 8th centuries, Chinese annalists used the expression 贤王 Xian wang only in reference to the Eastern Turkic Khaganate.[3]
The Tuqi King of the Left was generally designated as the successor of the chanyu. Two titles were awarded with each of them a commander-in-chief who derived his power from the eastern and western territories respectively. These served as two wings alongside the chanyu's main domain. The Chinese annalistic explanation was a "Worthy Prince of the Left (East)" and "Worthy Prince of the Right (West)".[1][2] This organization of the state was traditional for the Eurasian nomadic states from the Huns to the Turkic Khanates.