翻开中国史册,有人可能会发现一个有趣的现象。人们习惯上将晋朝分为西晋、东晋,又习惯上将宋朝分为北宋、南宋。但是,却从没将明朝称为北明和南明的。为什么?当然有它的道理。无论东晋还是南宋,虽然是作为西晋和北宋的延续,但它们有很强的独立性,形成了长时期 Open the Chinese history, some people may find an interesting phenomenon. People used to be divided into the Jin Dynasty Jin and Jin Dynasties, and used to be the Song Dynasty is divided into the Northern Song Dynasty, Southern Song Dynasty. However, the Ming Dynasty has never been called the North Ming and South Ming. Why? Of course it has its truth. Both the Eastern Jin Dynasty and the Southern Song Dynasty, although being the continuation of the Western Jin Dynasty and the Northern Song Dynasty, have strong independence and formed a long period