Goguryeo's expansion meets temporary setbacks when in…
342 CE
Goguryeo's expansion meets temporary setbacks when in 342, Former Yan, a Sixteen Kingdoms state of Xianbei ethnicity, attacks Goguryeo’s capital, now at Wandu (in modern Ji'an, Jilin).
Xianbei leader Murong Huang, knowing that he cannot hold the Goguryeo territory, takes Gao Zhao's mother and the body of Gao Zhao's father Gao Yifuli back to Longcheng as collateral for Gao Zhao's submission.