《宋史·本纪·卷四十七》
二十四日，以柳岳为工部侍郎，洪雷震为右正言，出使元朝，请求和好。
庚申，以柳岳为工部侍郎，洪雷震为右正言，使燕祈请。
On the twenty-fourth, Liu Yue was appointed as the deputy minister of public works and Hong Leizhen as the right-hand advisor, and they were sent to the Yuan dynasty to sue for peace.