Battle of Ruxu
222 CE.
Shown on the map at 31.635°, 117.889°.
The Battle of Ruxu, also known as the Battle of Ruxukou, took place in 222-223 between the forces of Cao Wei and Eastern Wu during the Three Kingdoms period. The battle was the third battle taking place between the Cao and Sun clan at Ruxu, but this particular conflict was the only of the three to take place actually during the Three Kingdoms period, as the other two took place in 213 and 217.
Text from the Wikipedia article Battle of Ruxu (222–223), licensed CC BY-SA 4.0.