Referenced entries:
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燕 |
Yān | 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 (337–370), Later Yan 后燕 (384–409), Southern Yan 南燕 (398–410), Northern Yan 北燕 (409–436) / surname Yan |