Jin Xiaowudi, age 10, succeeds his father Jin Jianwendi. Empress Chu Suanzi serves as regent, but decisions are made by the high officials Xie An and Wang Tanzhi. The Huns attack the Tervingi on the Dniester, overwhelming them with light cavalry (horse archers), and devastating the settlements of the Goths. King Athanaric is defeated and seeks refuge in Caucaland in the Carpathian Mountains. Saint Augustine adopts Manichaeism.
Geopolitics & Diplomacy
Athanaric starts building new defensive works to protect his people against the Alans and the Huns.source
The first diplomatic ties are established between the Korean kingdom of Baekje and the Chinese court of the Jin Dynasty.source
Conflict & Security
The Huns attack the Tervingi on the Dniester, overwhelming them with light cavalry (horse archers), and devastating the settlements of the Goths. King Athanaric is defeated and seeks refuge in Caucaland in the Carpathian Mountains.source
Sixteen Kingdoms: Jin Feidi is dethroned as emperor of the Eastern Jin Dynasty. He is replaced by his granduncle Sima Yu, who is installed as Jin Jianwendi.source
Emperor Valentinian I is engaged in operations against the Alamanni, Quadi and Sarmatians, while his subordinates are dealing with the Roman usurper Firmus in Africa and the Picts in Britain.source
Religion & Belief
Buddhism is adopted as the official religion of Gorguryeo.source
Basil the Great establishes the Basileias, possibly the first hospital, near Caesarea Mazaca on land granted by emperor Valens.source
Culture & Society
September 12 – Jin Xiaowudi, age 10, succeeds his father Jin Jianwendi. Empress Chu Suanzi serves as regent, but decisions are made by the high officials Xie An and Wang Tanzhi.source
The national academy of Chinese learning, called Taehak, is established in the kingdom of Goguryeo (Korea).source
Births
Pei Songzhi, Chinese historian and politician (d. 451)source
Deaths
Jianwen of Jin, Chinese emperor of the Jin Dynasty (b. 320)source
Sabbas the Goth, Christian reader and saint (b. 334)source
Maximus of Ephesus, Greek Neoplatonist philosophersource