Chencang (188) — the same event in Book of the Later Han and Zizhi Tongjian

Book of the Later Han: Bandit Wang Guo of Liangzhou besieged Chencang, and the General of the Right Huangfu Song came to relieve it.; Zizhi Tongjian…

What each source says

Book of the Later Han (Hou Hanshu), Annals · AD 188 · 陳倉

Bandit Wang Guo of Liangzhou besieged Chencang, and the General of the Right Huangfu Song came to relieve it.

十一月,涼州賊王國圍陳倉,右將軍皇甫嵩救之。
Location: 後漢書卷8 孝靈帝紀 中平5年

Zizhi Tongjian (Comprehensive Mirror) · AD 188 · 陳倉

In the eleventh month, Wang Guo besieged Chencang, so Huangfu Song was reinstated as Left General and made to hold it with Dong Zhuo, the Right General, with forty thousand men.

十一月,王國圍陳倉。
Location: 資治通鑑 卷059 (원문 단락 #4840, 188년)

Place: 陳倉

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