Taiyuan (936) — the same event in History of Liao and Zizhi Tongjian

History of Liao: Shi Jingtang of Hedong sent Zhao Ying and Sang Weihan to ask for help, and he agreed to send troops.; Zizhi Tongjian: Shi Jingtang…

What each source says

History of Liao (Liaoshi) · AD 936 · 太原

Shi Jingtang of Hedong sent Zhao Ying and Sang Weihan to ask for help, and he agreed to send troops.

」時趙德鈞亦遣使至,河東復遣桑維翰來告急,遂許興師。
Location: 遼史 卷3 天顯11年 7月

Zizhi Tongjian (Comprehensive Mirror) · AD 936 · 太原

Shi Jingtang submits to the Khitan, promising to give the lands north of Lulong and Yanmen in exchange for reinforcements.

石敬瑭遣間使求救於契丹,令桑維翰草表稱臣於契丹主,且請以父禮事之,約事捷之日,割盧龍一道及雁門關以北諸州與之
Location: 資治通鑑 卷280 제24단(머리글 이후 비공백 줄 기준)

Place: 太原

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