The History of the Tang Dynasty

In 15 13, the sultan of turpon had occupied the city of hami in eastern shindang. Hami had been under chinese control since the late fourteenth century. The imperial court sent an official to mee with the sultan slash khan and negotiate the return of the imperial city seals. But even these negotiations proved more difficult than expected. In response, monser's envoys were detained in bejing as o 15 21,. hostilities were renewed, culminating by a full on attack on gonjo in 15 24.