釋氏稽古略 4.385

4.385

As the territory of the Jin state grew daily more constricted, they subsequently harbored designs on the southern regions of the Jiang and Han, stirring up enmities with the Song and repeatedly attacking and seizing Song lands. At this time, Western Xia harbored increasingly divided loyalties toward the Jin and sent a letter to the Song proposing a pincer attack on the Jin. In the eighth month, An Bing of the Song agreed to the Xia plan (Record of Jin).