《资治通鉴·梁纪·梁纪七》
五月丁未，北魏孝明帝颁下诏书将要北征，朝廷内外戒严，但是最后却没有成行。
五月，丁未，魏主下诏将北讨，内外戒严。既而不行。
On a dingwei day in May, Emperor Xiaoming of Northern Wei issued an edict to say that he was preparing to make a Northern Expedition, and martial law was declared in the capital and throughout the country, but the expedition was never carried out in the end.