With Jing Ke successfully killing the King of Qin in 227 BCE as our PoD, how can Chinese history of the next few centuries be as altered as possible? When this PoD is usually discussed, the consensus is that the Unification of All Under Heaven is effectively inevitable by this point; so what other plausible effects are there that would change this new civilization (that OTL emerged from the Qin and Han empires) as much as possible?
For example, as the title implies, is it possible to save more of the schools of philosophy that were popular during the Spring and Autumn and Warring States period, such as Mohism or Yangism? Or for that matter, to curb the influence schools that dominated subsequent Chinese history, namely Confucianism?
What about other possible changes? Could the centralized bureaucracy established by the Qin Empire be weaker than OTL, making room for an enduring landed aristocracy? Woukd this period of unification last as long as it did OTL (over four centuries)? And depending on how China is changed, politically and culturally, how do the butterflies flap beyond their borders?