Chengdu (829) — the same event in New Book of Tang and Zizhi Tongjian

New Book of Tang: The Yunnan Man invaded Chengdu.; Zizhi Tongjian: Nanzhao takes the outer districts of Chengdu.

What each source says

New Book of Tang (Xin Tangshu), Annals · AD 829 · 成都

The Yunnan Man invaded Chengdu.

雲南蠻寇成都
Location: 新唐書 卷008 穆宗~宣宗 大和3年12月

Zizhi Tongjian (Comprehensive Mirror) · AD 829 · 成都

Nanzhao takes the outer districts of Chengdu.

庚戌，陷其外郭。
Location: 資治通鑑 卷244

Place: 益州 · 成都

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