Ironfisted power struggles and a hundred schools of thought contending. Every change of emperor brings forth no shortage of brilliant and capable people. The imperial throne has passed from hand to hand for a thousand years. Perhaps the emperors aren't the problem, but the system.
After all, socialism has its advantages.
Theme: The choices made by history are right.
According to my limited medical knowledge, the severity of plague and cholera is no less than that of smallpox_(:з∠)_