Xi is exacting specific cultural violence as an administrator, neither the Mongols nor the Romans were as ridiculously obsessed with building an ethno-state as Xi once conquest was largely complete. Somehow, antiquity, immensely cruel and violent as it was, understood cultural/religious tolerance as an administrative principle better than a number of governments do today

Grouping Xi and Ghengis Khan is also an affront to the way in which modern state violence is exacted, we're comparing a confederation of nomadic horse warriors already habituated to raiding as a lifestyle vs a rational state organizing targeted cultural purgation