I Make Zhu Yunwen Lose It, and Old Zhu Dotes on Me Like Crazy

There's no harm in praying to the gods now and then. At the moment of mortal peril, the damn System finally comes out to save its host. But what the heck is a Godly Tycoon System? And this System only works once? So I've become Zhu Xiongying, the eldest legitimate grandson of the Ming dynasty? Since I'm already here, this life won't have any barbarian tribes to civilize, Jiangnan gentry to deal with, or a noose waiting at the end.