Format of naming convention in English is under discussion at Wikipedia talk:Naming conventions (Chinese) and Wikipedia talk:Naming conventions (Chinese)/monarchical titles.
Emperor Wu of Jin China, sim. ch.晋武帝, trad. ch.晉武帝, py. jin4 wu3 di4, wg. Chin Wu-ti (between 234 and 236-May 17, 290) was a grandson of Sima Yi and the first emperor of the Jin Dynasty (265-420). Emperor Wu was known for his extravagance and sensuality, espcially after the unification of China after 280; legends boasted of his unimaginable potency over ten thousand concubines.
Wu Hu (五胡 Pinyin Wu3 Hu2) is a collective term of non-chinese tribes during the period from Han Dynasty to Northern Dynasties.
Wu Hu were composed of five nomadic tribes: Xiongnu (匈奴 xiong1 nu2, sometimes identified with the Huns), Xianbei (鮮卑 xian1 bei1), Di (氐 di1), Qiang (羌 qiang1), and Jie (羯 jie2) although different groups of historians and historiographers have their own definitions.
Accession of Jin Huidi[?] as the Jin Emperor in 290 began the crumbling of Jin Dyansty.
He reigned from 265 to 290, and after destroying Eastern Wu in 280 was the emperor of the unified Chinese empire.
Before Empress Yang died in 274, she was concerned that whoever the new empress would be would have ambitions to replace the crown prince, and therefore asked Emperor Wǔ to marry her cousin Yang Zhi.
Emperor Wǔ died soon thereafter, leaving the empire in the hands of a developmentally disabled son and nobles intent on shedding each other's blood for power, and while he would not see the disastrous consequences himself, the consequences would soon come.