Battle of Chang'an (784) — the same event in New Book of Tang and Zizhi Tongjian

New Book of Tang: Li Sheng defeated Zhu Ci at Baihua and recovered the capital.; Zizhi Tongjian: Li Sheng recovers Chang'an.

What each source says

Li Sheng defeated Zhu Ci at Baihua and recovered the capital.

戊戌，又敗之于白華，復京師
Location: 新唐書卷007 德宗·順宗·憲宗興元1年5月

Li Sheng recovers Chang'an.

天象高遠，誰得知之！」既克長安，乃謂之曰：「曏非相拒也，吾聞五星贏、縮無常，萬一復來守歲，吾軍不戰自潰矣！」皆謝曰：「非所及也！」
Location: 資治通鑑卷231

Place: 長安