He wasn't killed. He signed a pact with the republic ensuring his safety.
Commies didn't respect the pact and sent him to gulag.
Also he wasn't a Han emperor but a nomadic Manchurian oppressor. Chinese was always referred to Han exclusively until he cowardly surrendered Manchuria, Mongolia, Tibet and Xinjiang to the new republic and forced those people to join.
Did french peasants need to kneel whenever any government official passes by?
Did they get a beating whenever they are dragged to court? And tortured until admitting whatever crimes they were accused of?
Were they not able to afford meat outside of christmas?
Were French men required to shave a particular hairstyle or face punshiment of beheading?