Duolan 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 Gokturk empire. He married his mother, Princess Zhou Tsienkien, now under the name princess Sui Dai. 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.