Run! That Sickly Fellow Is an Evil Ancestor!

[No CP + nonhuman protagonist + fake do-gooder + killing wildly while coughing up blood + if it's not good, the author gets their legs broken + N secret identities] On the surface, Chang Ming runs a teahouse. In secret, he's an old ghost who has lived for a thousand years. He was once so powerful that no one could stand against him. Wherever he went, bloodshed followed, and people respectfully called him the Ancestor of Evil Fiends. But the Ancestor of Evil Fiends had barely enjoyed the title for a few days before the righteous factions joined forces and beat him into a foldable-screen phone... A thousand years later, he is still weak and can only hunt down a few little ghosts to regain his strength. But while catching them, he makes an unexpected discovery: these demons and monsters, running rampant and causing trouble everywhere, have actually been deliberately raised by today's righteous clans to serve their own selfish ends? And the reason these righteous clans are raising evil spirits is... to bring him back to life? [Ship whatever you like. The author ships them too. But if you ask me whether this has two male leads, I'll still say: this is a no-CP story. CP fans and friendship fans can each have their own take. Just don't argue or beat up the author.]