In May of 884 AD, on the official road fifty li southwest of Bianzhou (modern-day Kaifeng)In May of 884 AD, on the official road fifty li southwest of Bianzhou (modern-day Kaifeng)r out of thin air. Unexpectedly, Zhang Gui-ba merely retracted his right elbow and executed a sweeping attack called "Sweeping Thousands of Armies." The two long spears collided, showering sparks ever...