Goguryeo's Expansion and Wars with the Central Plains

Timeline

1. 342–345Liaodong · LiaodongMurong Huang of Former Yan led an army against Goguryeo, at one point capturing Wandu; Goguryeo was forced to move its capital to Naeseokjeong, and control of Liaodong seesawed between the two sides.
2. 391–404Pyongyang and the Han River basin · Korean PeninsulaDuring Gwanggaeto the Great's reign Goguryeo launched major northern campaigns, capturing Lelang, Liaodong and other areas, and campaigned south against Baekje, extending its power north of the Han River; the Stele of Gwanggaeto records his military achievements.
3. 370–400Yalu River basin · Yalu River basinGoguryeo maintained a military standoff with Central Plains regimes in Liaodong while also conducting tributary and diplomatic exchanges with southern regimes such as Eastern Jin, establishing itself as an independent power in Northeast Asia.