The Battle of Yan Province was fought between the warlords Cao Cao and Lü Bu for control of Yan Province (covering present-day southwestern Shandong and eastern Henan) in the late Eastern Han dynasty. The battle lasted for at least one hundred days with an indecisive conclusion.
HistoryLayer draws the world as it was in any year from 123,000 BCE to
2026. Move the slider and the borders redraw for that year; the map
carries 23,890 events, 12,790 people, 837 wars and 13,183 cities, each
one readable in place. Signing in is optional and lets you keep what
you find.