The Jin Dynasty 晉朝, sometimes distinguished as Sima Jin 司马晋 or Liang Jin 两晋, was a Chinese dynasty traditionally dated from c. 265 to c. 420 AD. It was founded by the infamous Sima Yan 司马炎 and followed the Three Kingdoms Era 三国 which ended with the conquest of the Eastern Wu 东呉 by the Jin. There are two main traits in the history of this dynasty: The Western Jin (265–316) and the Eastern Jin 东晋朝 (317–420 AD). The Western Jin was established as a successor state to Cao Wei 曹魏 after Sima Yan usurped the throne. The Western Jin reunited China in 280, but shortly after the empire fell into a succession crisis again, suffered from civil war, and became subject to the invasion of the so-called Five Barbarians 五胡. The rebels and invaders established new self-proclaimed states in the Yellow River valley by 304 AD, starting the Sixteen Kingdoms Period 十六国. These sixteen states immediately fought each other causing the second division of the Jin Dynasty, then called the Eastern Jin Dynasty when Sima Rui 司马睿 moved the capital to Jiankang 建康 (modern Nanjing 南京).