i have no idea why i called the sui the suo, too much playing sengoku strategy games maybe. i apologize.

in northern india/iran/afghanistan area, the [h]epthalites a.k.a white huns power was being broken by wars with the sassanids, indians, and turks after the epthalites had slaughtered most of northern india. but i purposely left them out because their fall was happening about a half century before most of the stuff i was describing began.

i think if you had to pick any one event that had a significance in most of the other events, it would have to be the formation of the first turkish khaganate, the go[k]turk empire under bayan in 552. and their formation and collapse had effects throughout eurasia. it caused the avars to push westward towards the byzantines, pushed the epthalites towards india, and the collapse of turkish power was indirectly related to a strong chinese state under the sui. also the sui and koguryo came into conflict because they were both expanding into the power vacuum left by the eastern turks.