Conflict244–245
Invasion by Guanqiu Jian of Wei
After King Dongcheon attacked Wei’s Xi’anping, the Wei general Guanqiu Jian invaded and sacked Hwando.
Sohan Dsouza · CC BY-SA 4.0 · Source
Wei destroyed the Gongsun clan of Liaodong in 238 and now bordered Goguryeo directly. Exploiting the wars among Wei, Wu and Shu, Dongcheon attacked Xi’anping at the Yalu mouth in 242 to cut the road between Liaodong and Lelang. Guanqiu Jian struck back twice in 244–245, took Hwando and chased the king as far as southern Okjeo.
In the crisis Yu Yu feigned surrender and stabbed a Wei commander with a knife hidden in a food dish, while Mil U and others guarded the king and drove the Wei army out. A stele recording Guanqiu Jian’s campaign was found at Ji’an.