《金史·列传·卷四十六》
而又有恒州、虢县所属几处关隘，宋兵均固守如旧，危急时又必然要分散关的兵力，留下人数少了必定难以支持，而凤翔、恒、陇也无法接应增援，恐怕会造成两失。
则又有恒州、虢县所直数关，宋兵皆固守如旧，缓急有事，当复分散关之兵。余众数少，必不能支，而凤翔、恒、陇亦无应援，恐两失之。
And there are several passes belonging to Hengzhou and Guo County, which are still guarded by the Song army as before. In times of crisis, the troops at the pass must be dispersed, but if the number left behind is small, they will definitely be unsustainable, and Fengxiang, Heng, and Long will not be able to provide reinforcements. I am afraid that both will be lost.