Chinese "Qaghans" Appointed by the Türks

Students of Chinas traditional foreign relations are well acquainted with the Chinese phrase yi yi zhi yi j;)~mU~, usually translated as "using 'barbarians' to control 'barbarians.'" Rather than defining a single specific policy, this phrase came to encompass a set of policies, which can be grouped into three basic categories: (1) employing submitted foreigners as troops within Chinas military establishment to assist with a dynasty's defense against foreign powers; (2) creating or exploiting divisions within a single foreign polity in order to weaken it; and (3) pitting one foreign power against another in order to weaken one or both of them. The first of these was proposed as a specific policy by Chao Cuo il~!(d. 154 B.C.E.), an official of Chinas Han dynasty (202 B.C.E.-220 C.E.) who sought to find methods through which China could cope with the threat of its powerful northern neighbors, the nomadic Xiong-nu {gjJ~X.l Later, the term was expanded to include the two additional approaches.2 In the case of the second and third categories, a common method of creating divisions among China's enemies was for an emperor in China to show favor to one foreign leader or polity over another. Such favor could take many forms, including political alliances (some of which were affirmed through marital connections), preferential trade arrangements, and the granting of titles. While by no means always successful, this set of techniques remained an important component of imperial China's foreign policy repertoire. The frequent use of the term yi yi zhi yi and the regular study of its application have tended to focus on Chinese actions, and this has often obscured the other side of the coin: policies employed by Chinas neighbors to manipulate the "Middle Kingdom" by using sometimes surprisingly similar techniques. This essay seeks