Agreed there is nuance, but the Han dynasty had similar borders 2000 years ago.
The Great Wall helped, it wasn't the easiest thing to move around.
The Great Wall helped, it wasn't the easiest thing to move around.
Hell, at one point in the late 18th and early 19th century, the village my family is from would have technically been Qing AND Sikh AND Dogra. Borders are artificial constructs that have historically been more fantasy than reality (at least until the late 19th to mid 20th century)