Battle of Chang'an (883) — the same event in Old Book of Tang, New Book of Tang and Zizhi Tongjian

Old Book of Tang: The allied army under Li Keyong and others recovered Chang'an.; New Book of Tang: Li Keyong defeated Huang Chao at Weinan and…

What each source says

Old Book of Tang (Jiu Tangshu), Annals · AD 883 · 長安

The allied army under Li Keyong and others recovered Chang'an.

庚辰,收復京城。
Location: 舊唐書 卷19下 中和3年

New Book of Tang (Xin Tangshu), Annals · AD 883 · 長安

Li Keyong defeated Huang Chao at Weinan and recovered the capital.

丙午,復京師
Location: 新唐書 卷009 懿宗·僖宗 中和3年4月

Zizhi Tongjian (Comprehensive Mirror) · AD 883 · 長安

Li Keyong and others enter the capital through the Guangtai Gate, and Huang Chao sets fire to the palaces and flees.

甲辰,克用等自光泰門入京師,黃巢力戰不勝,焚宮室遁去。
Location: 資治通鑑 卷255

Place: 長安

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