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