《金史·列传·卷五十》
两省在前月癸卯日出行时，留下杨沃衍防守乡。
两省以前月癸卯行，留杨沃衍军守阌乡。
When the two provinces set out for battle on the day of Guimao in the previous month, they left Yang Woyan to defend their township.
<s>[INST] Take each pair of old and new sentences and unite them into a single translation that captures the core meaning: Archaic: 两省以前月癸卯行，留杨沃衍军守阌乡。 Updated: 两省在前月癸卯日出行时，留下杨沃衍防守乡。 [/INST] When the two provinces set out for battle on the day of Guimao in the previous month, they left Yang Woyan to defend their township.</s>
Take each pair of old and new sentences and unite them into a single translation that captures the core meaning: Archaic: 两省以前月癸卯行，留杨沃衍军守阌乡。 Updated: 两省在前月癸卯日出行时，留下杨沃衍防守乡。
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When the two provinces set out for battle on the day of Guimao in the previous month, they left Yang Woyan to defend their township.
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