Chang'an (157 BC) — the same event in Book of Han and Records of the Grand Historian

Book of Han: The emperor died at the Weiyang Palace and was buried at Baling; following his edict, the burial was simple.; Records of the Grand…

What each source says

Book of Han (Hanshu), Imperial Annals · 157 BC · 長安

The emperor died at the Weiyang Palace and was buried at Baling; following his edict, the burial was simple.

六月己亥,帝崩于未央宮
Location: 漢書卷004 文帝後元七年六月

Records of the Grand Historian (Shiji), Annals · 157 BC · 長安(未央宮)

Emperor Wen died in the Weiyang Palace at Chang'an, leaving an edict calling for simple burial.

後七年六月己亥,帝崩於未央宮。
Location: 史記卷010 孝文本紀

Place: 長安

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