Northern Yan (407โ436 AD) was a direct successor state to Later Yan. It was established when Gao Yun and the Han Chinese general Feng Ba staged a coup against the Later Yan ruler, effectively seizing its remaining eastern territories and population.
With its capital at Longcheng in modern Liaoning, it maintained a presence in the northeast. However, facing relentless pressure from the rising Northern Wei dynasty, the state finally fell in 436 AD, and its royal family sought refuge in Goguryeo.