The Rashīdī History 8.5.8

8.5.8

From these same Musulman historians we learn that, during parts of the tenth and eleventh centuries, the kingdom of the Ilak Khans extended from Khorasan to China, which is perhaps scarcely to be taken literally, but is only another way of saying that it extended a long way to the east; for the Chinese, in their chronicles of the same period, speak of transactions between their Emperors and the Khans of Kao-Chang and Bishbalik, as if these were independent chiefs.