《资治通鉴·魏纪·魏纪一》
根据汉朝将帝位禅让给曹魏，晋朝又从曹魏接受皇位，以后传于南朝宋，至于陈，又为隋取代，唐传后梁，至于后周，又被大宋承袭下来。所以不得不使用曹魏、南朝宋、齐、梁、陈、后梁、后唐、后晋、后汉、后周的年号，以便于记载各国的史实，并非尊崇谁、鄙视谁，也没有 正 和 闰 之别。
据汉传于魏而晋受之，晋传于宋以至于陈而隋取之，唐传于梁以至于周而大宋承之，故不得不取魏、宋、齐、梁、陈、后梁、后唐、后晋、后汉、后周年号，以纪诸国之事，非尊此而卑彼，有正闰之辨也。
According to the Han Dynasty, the emperor's throne was abdicated to Cao Wei, the Jin Dynasty accepted the throne from Cao Wei, and then passed it on to the Southern Song Dynasty. As for Chen, it was replaced by the Sui Dynasty, and Tang passed the Later Liang Dynasty. As for the Later Zhou Dynasty, it was inherited by the Great Song Dynasty. Therefore, the reign names of Cao Wei, Southern Song, Qi, Liang, Chen, Houliang, Houtang, Houjin, Houhan, and Houzhou had to be used to record the historical facts of each country, not to respect or despise anyone, nor to distinguish between right and wrong.