Zhenzhu Khan (Inchü Qaghan, Chinese: 真珠可汗) (died October 21, 645), personal name Inan (夷男), full regal title Inchü Bilge Qaghan or in Chinese Zhenzhupiqie Khan (真珠毗伽可汗), was a khan of Xueyantuo, under whom Xueyantuo rose from being a vassal of Eastern Tujue to a mighty khanate ruling over northern/central Asia. During his reign, Xueyantuo largely aligned with China's Tang Dynasty, even though the two states were at odds at times, with the most serious dispute involving Tang's attempt to reestablish Eastern Tujue as a vassal state under the Qilibi Khan Ashina Simo—an attempt that eventually failed due to frequent incursions by Yi'nan's army against Ashina Simo. Throughout Yi'nan's reign, Xueyantuo remained powerful despite Tang attempts to curb its power, but after Yi'nan's death, a success