Beidi (108) — the same event in Book of the Later Han and Zizhi Tongjian

Book of the Later Han: A messenger of the Xianling Qiang proclaimed himself emperor at Beidi and invaded the Three Capital Districts, Zhao and Wei…

What each source says

Book of the Later Han (Hou Hanshu), Annals · AD 108 · 北地

A messenger of the Xianling Qiang proclaimed himself emperor at Beidi and invaded the Three Capital Districts, Zhao and Wei, and Yizhou, killing Hanzhong Governor Dong Bing.

先零羌滇零稱天子於北地,遂寇三輔,東犯趙、魏,南入益州,殺漢中太守董炳。
Location: 後漢書卷5 孝安帝紀 永初2年

Zizhi Tongjian (Comprehensive Mirror) · AD 108 · 北地

Dian Ling declared himself emperor, gathered the Wu-dao, Can-lang, Shangjun, and Xihe Zazhong Qiang of Beidi, cut off Nongdu, and plundered the Three Capitals. He entered the southern Yi Province and killed the Hanzhong Governor Dong Bing.

滇零自稱天子,於北地招集武都參狼、上郡、西河諸雜種羌斷隴道,寇鈔三輔,南入益州,殺漢中太守董炳。
Location: 資治通鑑 卷049 (원문 단락 #3845, 108년)

Show on the map — open Book of the Later Han (Hou Hanshu), Annals