Chengdu (870) — the same event in New Book of Tang and Zizhi Tongjian
New Book of Tang: The Yunnan Man invaded the two prefectures of Lizhou and Yazhou and Chengdu.; Zizhi Tongjian: Nanzhao attacks Chengdu from all…
What each source says
The Yunnan Man invaded the two prefectures of Lizhou and Yazhou and Chengdu.
雲南蠻寇黎、雅二州，及成都
Location: 新唐書 卷009 懿宗·僖宗 咸通11年1月
Nanzhao attacks Chengdu from all sides with ladders and battering rams.
二月，癸未朔，蠻合梯沖四面攻成都，城上以鉤繯挽之使近，投火沃油焚之，攻者皆死。
Location: 資治通鑑 卷252
Place: 益州 · 成都
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