《资治通鉴·周纪》23丨魏惠王 悔不用公叔之言

Summary

This 芮淇讲透资治通鉴 episode completes the 公孙鞅 / 商鞅 attack on 魏国 after 公子卬 / 公子昂 is captured: 秦国 breaks Wei, 魏惠王 cedes Hexi territory, and Wei shifts from 安邑 to 大梁. The source then compares Shang Yang’s one-shot parley deception with 孙膑’s more reusable military method, turning the victory into a case of 战术信用成本. It closes with 秦孝公’s death, 嬴驷’s succession, 公子虔’s accusation, Shang Yang’s failed flight to Wei, and the 作法自毙 irony of a severe legal order trapping its own designer.

Key Claims

• After Shang Yang captures Gongzi Ang, he attacks while the Wei army is leaderless and wins a major victory.
• The episode treats this battle as the point where the long-contested Hexi area effectively passes to Qin.
• Liang Hui Wang fears Qin, offers Hexi territory for peace, moves his capital to Daliang, and regrets not following the dying advice of the Wei chancellor 公叔痤 about Shang Yang.
• The host compares Shang Yang with Sun Bin: Shang Yang’s trick produces larger immediate gains, but Sun Bin’s deception has more strategic value because it is reproducible and less destructive to personal trust.
• 《吕氏春秋》 is cited as criticizing Shang Yang for both non-repeatability and damaged credibility.
• The episode says Shang Yang’s later attempt to flee to Wei fails partly because the Gongzi Ang incident makes Wei unwilling to trust his intentions.
• Shang Yang receives the 商於 fief of fifteen cities and becomes 商君 / Shang Jun, the basis for the later Shang Yang name.
• The annalistic sequence also records Qin and Zhao attacking Wei, 楚宣王 dying, 楚威王 succeeding, and 339 BCE being blank in 《资治通鉴》.
• In 338 BCE, Qin Xiao Gong dies after twenty-four years of rule; the episode says his goals of strengthening Qin, reclaiming Hexi, and forcing Wei to yield were largely complete before death.
• After Qin Xiao Gong dies, Shang Yang loses the ruler protection that had made his reforms politically survivable.
• Gongzi Qian’s faction accuses Shang Yang of rebellion; Shang Yang flees toward Wei, is refused entry, returns to Qin, raises troops in Shangyu, is killed, and is posthumously dismembered with his family exterminated.
• The 《史记》 lodging-story version says Shang Yang cannot stay at an inn without identity papers because his own law punishes the innkeeper, giving the episode its “作法自毙” closing irony.

Key Quotes

“吾悔不用公叔之言” - Liang Hui Wang’s regret after ceding territory and moving the capital.

“兵以诈立” - tactical frame now qualified by the later credibility cost.

“法之弊，一至此哉” - Shiji-style self-trap line attributed to Shang Yang in flight.

Connections

• 芮淇讲透资治通鉴, 《资治通鉴》, 《史记》, 《吕氏春秋》, 司马光, 周显王, and 战国时期 - show, base chronicle, source supplements, compiler, reign frame, and period setting.
• 公孙鞅 / 商鞅, 秦国, 秦孝公, 嬴驷, 公子虔, 商於, 商鞅变法, 耕战逻辑, and 军功爵制 - Qin reformer, ruler support, succession, fief, and incentive branch.
• 魏国, 魏惠王, 公叔痤, 公子卬 / 公子昂, 安邑, 大梁, and Qin Eastward Pressure / 秦国东进压力 - Wei’s post-Maling decline and western-front losses.
• 孙膑, 马陵之战, 减灶诱敌, 和谈诱捕, and 战术信用成本 - contrast between reusable battlefield deception and one-shot trust-destroying deception.
• Warring States Reform Backlash / 战国变法反噬, 作法自毙, and 连坐 - reform backlash and legal self-trap branch.
• 楚宣王, 楚威王, and 楚国 - brief Chu succession notice.

Contradictions

• No direct contradiction found. The source extends episode 22’s 和谈诱捕 by adding the victory’s territorial outcome, Shang Yang’s fief, and the later credibility cost when Wei refuses him refuge.
• The episode treats Gongzi Ang’s capture as tactically successful but strategically costly for Shang Yang’s reputation; this qualifies rather than contradicts the earlier “兵以诈立” framing.