Ancient Chinese state of the northern frontier established in the early Western Zhou with its capital at Ji (modern Beijing); one of the seven major Warring States, notable for the failed assassination attempt on King Zheng of Qin (the future First Emperor) by its envoy Jing Ke.
Conquered by Qin in 222 BC.
Covers Yan's founding in the early Western Zhou and its role as the northernmost of the seven Warring States.