Yulin (607) — the same event in History of the Northern Dynasties and Book of Sui

History of the Northern Dynasties: He pitched a great tent east of the walls of Yulin commandery and feasted Qimin Khan and 3,500 of his people…

What each source says

History of the Northern Dynasties (Beishi), Annals · AD 607 · 榆林

He pitched a great tent east of the walls of Yulin commandery and feasted Qimin Khan and 3,500 of his people.

甲寅,上於郡城東禦大帳,其下備儀衛,建旌旗,宴啟民及其部落三千五百人
Location: 北史 卷12 大業3年

Book of Sui (Suishu), Imperial Annals · AD 607 · 榆林

Outside the eastern wall of the commandery he set up a great tent and held a banquet for Qimin Khan and 3,500 members of his tribe.

宴啟民及其部落三千五百人
Location: 隋書 卷003 帝紀 大業3年7月

Place: 榆林

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