@darthfanta So interestingly, a China united by the north in the early 3rd century means said region continues to serve as the political, cultural, and agricultural center of the empire for at least a few more centuries. That right?
Because that by itself just might have some major implications for the evolution of Chinese civilization. One thing that comes to mind -- is it accurate to say that, during the Late Han and Three Kingdom eras, that the south was the stronghold for the Taoist revival? And that this revival (the Yellow Turbans, etc) played a key role in the evolution and/or growth of Taoist philosophy in the centuries to come? If so, would keeping the core of China's civilization in the north (for longer) butterfly this development, making said civilization "less Daoist" (for want of a better term) in subsequent centuries?