Dulan Khan
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Yöngyulü Tülan-Qağan (Tunga-Turan, Tulan-Khan, 都蘭可汗, 雍虞閭) The son of Ishbara and the seventh qaghan of the Göktürk empire. He married his father's wife, Northern Zhou's Princess Qianjin, now under the Sui Dynasty title Princess Dayi. Her new name was given to her by the Sui Emperor Wendi to create a marriage alliance with the Turks. Secretly she plotted with Dulan-qaghan's rival, Tuli to to attack the Sui Empire when her husband refused. This plot is exposed by Chang sun-sheng a spy of the Sui Empire.