In thousands of years of history, we have never broken the enemy, from east to west, from north to south. Although some of the enemies of that year may have integrated into the Chinese nation today, they could only be regarded as enemies at that time. We must not Modernize ancient history, otherwise our large number of famous patriots, such as Su Wu, Yue Fei, Wen Tianxiang, will be stripped of their patriotic halo and become victims of civil war. The gist of this text is:. ['National heroes are all patriots.', 'Civil war and unification are the laws of historical development.', 'Patriotism in different periods is narrow.', 'National heroes cannot be denied because of historical changes.']