《战国策·赵四·燕封宋人荣坌为高阳君》
赵王因此割让济东高地上的三座城市卢、高唐、平原和五十七个居民点给齐国，而要求得安平君任命他为大将，以便抵抗燕国的进攻。
赵王因割济东三城令卢、高唐、平原陵地封邑市五十七，命以与齐，而以求安平君而将之。
As a result, King Zhao ceded the three cities of Lu, Gaotang, and Pingyuan and fifty-seven settlements on the Jidong Plateau to the State of Qi in exchange for the appointment of Anping Lord as a general to resist the attack of the State of Yan.