I don't know how you guys can do WCs and conquer half the known world, this took me almost the entire game. And I expanded pretty much historically, just missing a couple provinces and have conquered a couple provinces Qing didn't own (Russia did), but oh well. Being Buryatia is suffering though.
This is me sieging the most unexpected final boss I've ever met, Bukhara. They blobbed into mongol lands unopposed while I was busy conquering seven millions chinese states and Russia was busy pushing the Ottomans out of Ukraine. RIP Commonwealth, you were too nice for this world.
Things I've learned from this game:
Ming is still a paper tiger, Oirats got nerfed to the ground, Haixi are assholes.
Korea needs to stop attacking Japan. Had to vassalize them just to avoid having my eastern border flooded with screaming japs while I'm busy conquering deserts.
Qing needs to get cores instead of claims, speeds up the process a lot and helps you not lagging in adm and dip techs like a madman.
You can change dynasty as many times as necessary without repercussions, Aisin Gioro house died when I was still Jianzhou. Now a Persian family rules Qing.
Base tax in China is crazy.
You can westernize off cores from OPM Holland, whose only remarkable feature in game (except existing) was colonizing Taiwan. That didn't stop Austrian doomstacks from marching all the way across Europe to siege Dzungharia and being a bitch about letting Taiwan go though.
An Asian cosmetic pack would be balling. No, seriously.
And, finally, never play with historical lucky nations again, it evolves in some creepy stuff and serious bordergore.