Format of naming convention in English is under discussion at and .

Emperor Fei of Jin China (341 or 342-November 23, 386) was an emperor of the Eastern Jin Dynasty (265-420) in China. He was the younger brother (from the same mother) of Emperor Ai and later deposed by military leader Huan Wen .

Various character and romanization representations

• Simplified Chinese character 晋废帝
• Traditional Chinese character 晉廢帝
• Pinyin Jìn Fèidì
• Wade-Giles Chin Fei-ti

Timeline

• May 22, 369: Huan Wen began invasion against Former Yan.
• August and September, 369: Forces of Jin reached Fangtou (southwest of modern-day Rui County , Henan Province).
• September and October 369: Relief forces from Former Qin was sent at the request of Former Yan.
• October 369: Troops of Former Yan inflicted loss on the forces of Jin after cutting off supply lines.
• November 4 369: Huan Wen ordered withdrawal in the prospect of facing Former Qin and Former Yan.
• November and December 369: Forces of Former Yan commanded by Murong Chui inflicted heavy losses on the retreating Jin forces.
• December 7 369: Huan Wen retreated safely into territory of Jin. Casualties of Jin in the campaign ranged around 30 thousands.
• July 21 370: Former Qin launched invasion against Former Yan. Wang Meng was appointed commander of the Qin.
• October 15 370: Troops of Former Qin captured Jinyang (modern-day Taiyuan, Shanxi Province).
• Morning - noon, November 27 370: Decisive victory of Former Qin over Former Yan took place at Luchuan (潞川, modern-day Zhuozhang River, Shanxi)
• November 30 370: Ye, capital of Former Yan, was besieged.
• Night of December 11 370: Former Yan surrendered to Former Qin. Murong Wei , ruler of Former Yan, was captured several days later.
• January 6, 372: Huan Wen deposed Emperor Fei and Emperor Jianwen was installed. The dethroned emperor was given the title "Prince of Donghai" in the decree of deposing.
• February 16, 372: The dethroned emperor was given the title Duke of Haixi County (pinyin Haǐxīxiàn Gōng 海西县公)
• May, 372: The duke was placed under supervision after being moved to Wu County.
• December, 372: An abotive coup d'etat of reinstalling the duke resulted in removal of his supervision.
• November 23, 386: The duke passed away in Wu County.

Personal information

Family name	Sima (司馬 py. Sīmǎ) in Chinese
Given name	Yi (奕 py. Yì)
Era names	Taihe (太和 py. Taìhé) 365-January 6, 372
Father	Emperor Cheng
Mother
Wife	Yu Daolian (庾道怜) (d. 371), childless and revered Queen Xiao (孝皇后, literary meaning: the filial queen)
Major concubines
Children
Duration of reign	March 31, 365-January 6, 372
Tomb
Temple name
Courtesy name	延龄, py. Yanlíng, literay meaning: "lengthened ages"
Posthumous name	废, py. Fèi, literary meaning: "deposed"