Huangguadui (554) — the same event in Book of Northern Qi and History of the Northern Dynasties

Book of Northern Qi: In the fourth month, when the Rouran invaded Sizhou, Gao Yang was surrounded at Huangguadui in Hengzhou by tens of thousands of…

What each source says

Book of Northern Qi (Bei Qishu), Annals · AD 554

In the fourth month, when the Rouran invaded Sizhou, Gao Yang was surrounded at Huangguadui in Hengzhou by tens of thousands of Rouran subtribes; with only a thousand-odd cavalry he broke out, pursued them, and seized the wives and children of Anluochen along with over thirty thousand captives.

帝率麾下千餘騎,遇茹茹別部數萬,四面圍逼
Location: 北齊書 卷4

History of the Northern Dynasties (Beishi), Annals · AD 554 · 黃瓜堆

Surrounded at Huangguadui by tens of thousands of Rouran cavalry, he broke out, pursued them, and seized more than thirty thousand.

帥麾下二千餘騎為殿,夜宿黃瓜堆
Location: 北史 卷7 天保5年

Where the sources differ

A and B are two of the sources listed above.

On what pointSource ASource BWhat differs (in Korean)
WhoBook of Northern Qi (Bei Qishu), AnnalsHistory of the Northern Dynasties (Beishi), Annalsa는 茹茹, b는 蠕蠕 (같은 유연)
Show on the map — open Book of Northern Qi (Bei Qishu), Annals