I am pretty sure puyee the last Qing emperor was pacified, not thrown into guillotine. Manchus were not genocided either. Only Mongols Drungar was genocided, by Qing emperor, who do not follow ways of Han traditions.People just don't know Chinese history. Otherwise they will notice almost every main enemy Chinese dynasties dealt with in their primes were wiped out to extinction or neutered totally. People keep saying China had two foreign dynasties without asking what happened to their people afterwards.
And funny enough the Qing dynasty run by Manchus not only agreed with China's methods towards it's enemies, it went a step further. That's why it had no issues wiping on the Mongol problem once and for all.