The Mongol general Kuoduan Hequ had begun …
Years: 1236 - 1236
The Mongol general Kuoduan Hequ had begun in 1235 to attack the region of Sichuan through the Chengdu plain.
The occupation of this region has often been an important step for the conquest of the south.
The important city of Xiangyang, the gateway to the Yangtze plain, which is defended by the Song general Cao Youwen, capitulates in 1236.
