Chang'an (630) — the same event in Old Book of Tang and Zizhi Tongjian

Old Book of Tang: At Shuntian Gate, Taizong received the captured Jieli, and the northwestern tribes offered him the title Heavenly Khan.; Zizhi…

What each source says

Old Book of Tang (Jiu Tangshu), Annals · AD 630 · 長安

At Shuntian Gate, Taizong received the captured Jieli, and the northwestern tribes offered him the title Heavenly Khan.

夏四月丁酉,御順天門,軍吏執頡利以獻捷。
Location: 舊唐書 卷3 貞觀4年 4月

Zizhi Tongjian (Comprehensive Mirror) · AD 630 · 長安

In April 630 (Wuxu day), Xieli Khan arrives at Chang'an; the emperor, with the full pomp of his court at Shuntian Tower, summons him and enumerates his crimes.

突厥頡利可汗至長安,夏,四月,戊戌,上御順天樓,盛陳文物,引見頡利,數之曰:「汝藉父兄之業,縱淫虐以取亡,罪一也;數與我盟而背之,二也;恃強好戰,暴骨如莽,三也;蹂我稼穡,掠我子女,四也;我宥汝罪,存汝社稷,而遷延不來,五也。
Location: 권193 630년 항

Place: 長安

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