5 events the sources record for this year, grouped by region.
What happened
China (4)
Zhai Liao betrayed Fu Jian and rose in revolt; Murong Chui joined and attacked Fu Hui at Luoyang. (Book of Jin (Jinshu), Imperial Annals 晉書 卷009 帝紀 太元8年12月)
Yao Chang, a general of Fu Jian, rebelled with his cavalry in Beidi, made himself king, and named the state Qin (Later Qin). (Book of Jin (Jinshu), Imperial Annals 晉書 卷009 帝紀 太元9年4月)
Kezu Hun Tan gathered more than twenty thousand soldiers, attacked Yewang and took it, and led his army to join the force attacking Ye. (Zizhi Tongjian (Comprehensive Mirror) 卷105 384년 단락5 제5문)
Yan King Chui led more than two hundred thousand Dingling and Wuhuan and attacked Ye with flying ladders and tunnels, but could not take it, so he built a long encirclement to hold it, placed the old and the weak at Feixiang, and built Xinxing city to serve as a supply base. (Zizhi Tongjian (Comprehensive Mirror) 卷105 384년 단락10 제1문)
Korean Peninsula (1)
When the monk Malananta came from Jin, the king received him in the palace and honored him with courtesy. (Samguk Sagi (History of the Three Kingdoms) 卷24 枕流王 即位條)tradition