Zhuozhou (988) — the same event in History of Liao and Xu Zizhi Tongjian

History of Liao: He reached Zhuozhou and urged surrender with a silk letter, but it was not heeded; in the tenth month he attacked the outer walls…

What each source says

History of Liao (Liaoshi) · AD 988 · 涿州

He reached Zhuozhou and urged surrender with a silk letter, but it was not heeded; in the tenth month he attacked the outer walls and took it.

庚戌,次涿州,射帛書諭城中降,不聽。
Location: 遼史 卷12 統和6年 9月

Xu Zizhi Tongjian (Continuation of the Comprehensive Mirror) · AD 988 · 涿州

The Liao ruler stays near Zhuozhou and shoots silk letters into the city urging surrender, but the city does not comply.

庚戌,遼主次涿州,射帛書諭城中降,不從。
Location: 續資治通鑑 卷014 (988년 조)

Place: 涿州

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