The biggest difference between Qing dynasty and other dynasties was that Qing dynasty ruling class was formed by Manchurian Chinese, not Han Chinese. At the time, Manchu was a different nation as Han Chinese (Ming Dynasty), China as a nation was invaded by a foreign people, Chinese military forces were defeated, Chinese people either got slaughtered or surrendered, Han emperor killed himself, and was replaced by a Manchu emperor. So basically for all intents and purposes, Han China ended in 1644 A.D.