My grandfather was a great man. A great man, I tell you! A true Manchu who would not for a second consider degrading himself by claiming to be anything like those miserable Nikans, who for all their Arts of War and Analects were hopeless against Manchu steel!
My father, on the other hand, I always objected to, even all those times that I said I approved of his actions. His whole thing of saying 'oh look we're basically culturally Chinese now, so even if we were foreign to begin with we've earned the right to rule China now' was far, far too compromising. Obviously, we were destined to rule China just the way we were! Why do they think the Ming lost that war, long before we supposedly started 'acculturating' to their spineless ways? It's only since my father came to the throne that the Zunghars have started to forget their natural submission, as Mongols, to the imperial throne of the Great Qing!
And that Zeng Jing guy my father spared. What a loser! Writes to a general telling him to revolt, for no other reason than that his ancestor was Yue Fei! Ha! And then my father has the gall to spare this obviously treasonous cur just because he wrote letters saying he had repented. And then publishes all this nonsense about acculturation. So of course I recalled the books and also had Zeng Jing executed.
Worse, he thought it would be a great idea to start appointing officials to replace the tribal chiefs in the indigenous lands. A recipe for disaster, I tell you! Now, yes, maybe I won't do anything to reverse it, but I sure stopped it! By Heaven, what an idiot he was.
And then there's all those bureaucratic reforms he thought would be a good idea. A secret Department of Military Equipment designed to build up supplies without the rest of the bureaucracy knowing? Whatever for? What's the point of these brilliantly-equipped armies if nobody sees them coming!? Secret memorials so officials can communicate with the emperor directly? What do my officials have to hide from each other? Have them read the stuff out in front of everyone!
I repeat, I am the true successor of my grandfather, ever since I shot that bear in front of him on that imperial hunt when I was 10. Yes, I could obviously draw a hunting bow at age 10. And just like my grandfather, I have affirmed that the land taxes need never be raised again, as the empire already has all it needs.
So why does it seem like my dad's old ministers don't like me?
INFO
Mostly. It does sound like your father was very wrong to not respect his father and uphold your people's traditions. But you would be making the same mistake for not respecting your father.
But I think we need to think about what your country was like when he put in these policies. We live in an ever-changing world, so maybe your fathers' policies actually solved some pressing problems. For instance the secret Department of Military Equipment seem like it might be an efficient way of dealing with these Zunghars you speak of. And sometimes stubborn groups just need to be ignored for efficiency. I know I had to pass some orders to ignore powerful guilds to attract people, boost the economy, and help supply my armies. So without knowing what things were like when your father issued his orders, and what they are like now you are overturning them, I don't think we can make a judgement.
On not executing Jeng Jing though, that was just stupid on part of your father. He needed to value his name more highly. You executing Jeng Jing is definately NTA.
YTA. Overturning your father's policies is going to make your corruption problem much worse, secret memorials are a more efficient way of communicating (and alerts the emperor about corruption), replacing the tribal chiefs with local officials isn't a perfect solution but, again, is supposed to help reduce corruption.
Also taxes are actually necessary to help fund things like giant art collections with your name stamped all over them.