You Look Down on a Lifetime of My Hard Work, Zhu Yuanzhang?

Someone transmigrates into Zhu Yunwen, a man nobody in their right mind would choose to become, and figures he might as well resign as crown prince. Wouldn't it be great to hand the throne straight to Zhu Di, with his foreign-sounding name, and spend the rest of his life as a carefree former crown prince? Then a lot of things happen. I'll write it slowly, so feel free to read at your own pace.