Luzhou (844) — the same event in Old Book of Tang and New Book of Tang

Old Book of Tang: Guo Yi beheaded Liu Zhen and welcomed Shi Xiong, and five prefectures including Ze and Lu were pacified.; New Book of Tang: Guo Yi…

What each source says

Old Book of Tang (Jiu Tangshu), Annals · AD 844 · 潞州

Guo Yi beheaded Liu Zhen and welcomed Shi Xiong, and five prefectures including Ze and Lu were pacified.

王宰以聞,乃詔石雄率軍七千入潞州,誼斬劉稹首以迎雄,澤、潞等五州平。
Location: 舊唐書 卷18上 會昌4年

New Book of Tang (Xin Tangshu), Annals · AD 844 · 潞州

Guo Yi killed Liu Zhen and surrendered, pacifying Zelu.

昭義軍將郭誼殺劉稹以降
Location: 新唐書 卷008 穆宗~宣宗 會昌4年8月

Place: 潞州

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