《宋史·列传·卷一百一十七》
出发后，听说都城被围困，于是便停止了东南地区的驿道通信和勤王之军。
既行，闻都城受围，乃止东南邮传及勤王之师。
After they set out, they heard that the capital had been besieged and so they stopped the courier service with the southeastern regions and the army that was supposed to come to the emperor’s aid.