a wiki is more trusted sources, bro. 漢人 is applied to people of Han Dynasty.
Why people were ruled by Xianbei Tubobe clan still called themselves 漢人 ? because the number of Tubobe clan people is smaller in comparison with number Han ren.
Spoken like a true Wiki scholar,I use dissertations and research papers while you rely on a flimsy source.
Show me that 漢人 was used as an ethonym during the Han dynasty.
The ethnic Chinese didn't use 漢人,it was the Xianbei who started to and so the Northern Han Chinese population followed suit.
What is importance here to Han Chinese related to an anchorism in history of China ?,
The name of dynasties in China is changed time to time. It should been dated before or later on when Han chinese has still stayed in China from ancient time up to now.
Base on your logic I can say that Confucius and Qin Shihuang didn't shared bloodline with Han Chinese, they should been a Korean.
Again you are literally too foolish to realize that you can't retroactively apply ethonyms to people who didn't even view each other as the same.
We don't have the DNA Qin Shihuang so you can't prove or disprove if he's related to modern day Han Chinese,while Confucius's descendants were enfeoffed as marquises/dukes.(Confucius's descendants also reached Korea.)
Zhou populations also clustered with Han dynasty in skeletal studies,showing that they were related.
While your premise of Confucius or Qin Shihuang as Korean is utterly ridiculous as neither the Lu or Qin states spoke Koreanic languages,and there's evidence of a Koreanic substratum in Sinitic languages etither.
Trần and Hồ Dynasty is Vietnamese Dynasty, because they were 越化 vietnamized culturally after many hundred year and fought against Chinese invaders to protect independence of Vietnam.
There's no such thing as 越化,otherwise show a primary source where it was used this way.
Vietnamese culture was a carbon copy of Chinese culture,the identity that there was a distinct Vietnamese identity is challenged by modern day scholars.
I'm just using your logic,that non Han/Hua ethnicity means that the dynasty in no longer Chinese.
There was never an ethnic component to the concept of the Mandate of Heaven.
Otherwise look at countries such as England using your logic England ceased to exist when its rulers were of Roman,Anglo Saxon,Dane,Norman,Scot,Germanic heritage.