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Given a PoD before 1900 A.D., can there be a Chinese dynasty, if not having both North and South lands, that can have a reign of ~300 years?
Why 300? Because viewing the Chinese history, starting from Qin, there were no dynasty that can reign for longer than 300 years(Song might be a bit longer I admit). And as far as I know, there were some main reasons for a dynasty to fall: corrupted emperor/leader(to me, Ming is an exception here), "barbaric" invasions, environmental disasters, etc. Can any Chinese dynasty of OTL able to fend off most, or even all, of these causes, and survive much longer?
EDIT: Sorry, that "not" is not supposed to be exist