上郡 / Shangjun

上郡 / Shangjun appears in 《资治通鉴·周纪》34丨秦国总理如何玩转六国 as the much larger territorial gain 张仪 extracts from 魏国 after 秦国 returns 蒲阳. The source says 魏惠王 gives Qin fifteen counties of Shangjun.

The place matters because it turns a seemingly generous concession into a net Qin victory. Puyang is the visible gift, but Shangjun is the strategic payoff, making the episode’s 欲擒故纵式让利外交 a land-transfer mechanism rather than only a rhetorical trick.

Connections

• 张仪 - strategist whose maneuver wins the territory.
• 秦国 - recipient and rising western power.
• 魏国 and 魏惠王 - state and ruler that surrender the counties.
• 蒲阳 - returned place that makes the exchange psychologically effective.
• 秦国东进压力 and 连横 - broader Qin pressure and diplomatic field.