《左传·闵公·闵公二年》
和狄人在荧泽作战，卫军大败，狄人就灭亡了卫国。
及狄人战于荧泽，卫师败绩，遂灭卫。
Fought against Di people in Yingze, Wei army was badly defeated, Di people destroyed Wei.
<s>[INST] Kindly elucidate the central themes in this passage in English: 及狄人战于荧泽，卫师败绩，遂灭卫。 [/INST] Fought against Di people in Yingze, Wei army was badly defeated, Di people destroyed Wei.</s>
Kindly elucidate the central themes in this passage in English: 及狄人战于荧泽，卫师败绩，遂灭卫。
user
Fought against Di people in Yingze, Wei army was badly defeated, Di people destroyed Wei.
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