Tens of millions of Chinese died during the Manchu invasion of China. The Qing forced every Han Chinese male to shave their forehead and wear a queue on the threat of death, but that's apparently not humiliating.
When the Mongols and Manchu conquered the Chinese "Crown" it was more of a change of dynasty and they they effectively became Chinese. Mongolia was part of the Chinese empire until its fall in 1912, for instance.
Quotes from the PDF "What is at issue is not the magnitude of Qing achievement, but Ho's statement that "the key to its [Qing] success was the adoption by early Manchu rulers of a policy of systematic sinicization". The new scholarship suggests just the opposite: the key to Qing success, at least in terms of empire-building, lay in its ability to use its cultural links with the non-Han peoples of Inner Asia and to differentiate the administration of the non-Han regions from the administration of the former Ming provinces."
""Sinicization" -- the thesis that all of the non-Han peoples who have entered the Chinese realm have eventually been assimilated into Chinese culture -- is a twentieth century Han nationalist interpretation of China's past."
