Chengdu (965) — the same event in History of Song and Xu Zizhi Tongjian

History of Song: Meng Chang, ruler of Shu, surrendered at Chengdu.; Xu Zizhi Tongjian: On the day bingshen, Tian Qinzuo returns from Xichuan and…

What each source says

History of Song (Songshi), Annals · AD 965 · 成都

Meng Chang, ruler of Shu, surrendered at Chengdu.

乙酉,蜀主孟昶降。
Location: 宋史卷002 乾德三年

Xu Zizhi Tongjian (Continuation of the Comprehensive Mirror) · AD 965 · 成都

On the day bingshen, Tian Qinzuo returns from Xichuan and presents Meng Chang's letter of surrender, which asks that the tombs of his ancestors and his aged mother be cared for; the emperor replies with an edict of generous treatment, reassuring the officials and people of Xichuan.

丙申,田欽祚至自西川,孟昶降表以其先人墳墓及老母爲請,帝優詔答之,並諭西川將吏、百姓,使皆安堵。
Location: 續資治通鑑 卷004 (965년 조)

Place: 益州

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