On the other hand, he was frightened to them because as the Rare Vintage Blackburn Rovers Caricature 90’s t shirts Football Soccer Premier league t shirt tee of Tang Dynasty showed, when these military elites controlled and divided the regions by their owns, it would be a matter of time for them to rebel against the dynasty. So he had to develop lots of countering mechanisms, including to further these elites into the landlord class who had a stable income, as well as placing his leftover Mongolian army to check the military elites, dividing the military officers into sections. As the history has showed, these mechanism only worked in the short time. When the Yuan dynasty had no money but Mongolian slaves to pay these military-landlord elites, and the Mongolian army was corrupted by 2–3 generations, these military elites turned against the Mongolian and stayed away when the peasant uprising took place such the rule of the Yuan dynasty became to an end. So to address your question, the structure of the Yuan dynasty can’t be simply summarizrd by the demography on the top but the backbone in the middle. Also I think it’s absurd to emphasize on ethnicities because these Han military elites became landlords and treated the Han peasants like trash, and the Mongolian rulers on the top also had no problem of selling the Mongolian slaves to these elites. So it’s not just simply Han vs Mongolian, which is the nationalist understanding and a over simplified history.