Yan, a vassal state of Zhou in present-day Hebei and Liaoning
north Hebei
the four Yan kingdoms of the Sixteen Kingdoms, namely: Former Yan 前燕【QiánYān】 (337-370), Later Yan 后燕【HòuYān】 (384-409), Southern Yan 南燕【NánYān】 (398-410), Northern Yan 北燕【BěiYān】 (409-436)
Yan, a vassal state of Zhou in present-day Hebei and Liaoning
north Hebei
the four Yan kingdoms of the Sixteen Kingdoms, namely: Former Yan 前燕【QiánYān】 (337-370), Later Yan 后燕【HòuYān】 (384-409), Southern Yan 南燕【NánYān】 (398-410), Northern Yan 北燕【BěiYān】 (409-436)
Lingaku