Return of the Jade to Zhao
Lin Xiangru carried the Heshi jade to Qin, challenged Qin's failure to transfer the promised cities, and arranged the jade's safe return to Zhao, creating the enduring idiom of returning something intact.
Participants
Textual evidence
Every quotation below is matched verbatim against the local public-domain corpus during the build. It supports the event outline; it does not exhaust every interpretation.
“城入赵而璧留秦；城不入，臣请完璧归赵。”