Why are there northern men? Without a southern man?

There are historical reasons for this situation. As early as many years ago, probably more than 1, years ago, in the Southern and Northern Dynasties, wasn't there many countries at that time? Many of them are ethnic minorities, and their northerners call Han men men men, because ethnic minority countries mainly gather in the north and have close contacts with the north, and the south is basically absent, so it is like this.