《资治通鉴·汉纪》990丨李傕&郭汜：生死冤家为何突然联手？

Summary

This 芮淇讲透资治通鉴 episode backfills the immediate prelude to Hanji 991. In 195 CE, 杨定, 董承, and 杨奉 attack 段煨 around Huayin while 汉献帝 refuses to authorize the attack, and 张济 then shifts back toward 李傕 and 郭汜. The episode’s main contribution is to show how the emperor’s body remains the highest political chip: Li Jue and Guo Si suspend their feud not from reconciliation, but because losing the emperor would make their private victory strategically empty.

Key Claims

• In 195 CE, 汉献帝 is moving east while former 董卓 subordinates compete to control, escort, or exploit the court.
• 杨定 attacks 段煨 after judging Duan Wei’s Huayin position, grain, and control over the emperor’s route as a threat and opportunity.
• Yang Ding, 董承, and 杨奉 send Zhong Ji and Zuo Ling to request an imperial edict against Duan Wei, but the emperor refuses because Duan Wei has not shown rebellion.
• The anti-Duan force attacks anyway for more than ten days, while Duan Wei continues supplying food to the emperor and officials.
• 张济 helps turn the Duan-Yang dispute into wider Liangzhou old-follower conflict, then later joins 李傕 and 郭汜 against Yang Ding.
• Li Jue and Guo Si reunite because they realize the emperor is the shared strategic prize; saving or controlling Duan Wei is secondary to dragging the court west again.
• Yang Ding tries to retreat toward Lantian, is blocked by Guo Si, flees alone toward 刘表 in Jingzhou, and is killed en route by displaced armed people.
• The host reads Duan Wei as a rare former Dong Zhuo subordinate who survives by assessing timing and later submitting to 曹操, while Yang Ding is treated as a negative case of greed, rigidity, and situational misread.

Key Quotes

“见利而进，见害而止.” - host’s Legalist survival formula.

“没有永远的敌人，只有永远的利益.” - host’s summary of this alliance switch.

Connections

• 汉献帝, 李傕, 郭汜, 张济, 段煨, and 杨定 - core dispute over route control, grain, and possession of the emperor.
• 董承 and 杨奉 - emperor-escort actors who join the anti-Duan attack before their later emergency escort role in Hanji 991.
• 护驾与挟持模糊性, 合法性窗口抢占, and 利益结构式联盟脆弱性 - the emperor’s value turns protectors into captors and enemies into temporary allies.
• 行势情战略评估, 安全第一政治生存, and 韩非 - host’s frame for judging Duan Wei’s survival and Yang Ding’s failure.
• Hanji 991 - next source, continuing into the pursuit, battle, minister capture, and night river crossing.

Contradictions

• No settled contradiction found.
• Source-scope caution: Duan Wei’s prudence and Yang Ding’s greed/stubbornness are preserved as the host’s interpretation of the event pattern, not as standalone chronicle fact.