《资治通鉴·汉纪》355｜古人教你别耍心机，不信你看！

Summary

This short 芮淇讲透资治通鉴 episode supplies the missing prelude between the conquest of 南越 and the later campaign against 东越王余善. Yu Shan volunteers eight thousand troops to join 楼船将军杨仆, reaches 揭阳, then stops on the stated ground of dangerous seas while secretly contacting Nanyue. After Panyu falls without his arrival, Yang Pu detects the nonperformance and asks 汉武帝 to attack him, but the emperor initially refuses because the troops are exhausted.

The episode then shows ambiguity becoming open rebellion. Once Yu Shan learns of Yang Pu’s request and sees Han troops near his territory, he blocks military routes, authorizes “吞汉将军” titles, attacks several positions, kills three Han colonels, and assumes an imperial title. The source’s durable lesson is narrower than “cleverness always fails”: two-sided positioning can preserve options briefly, but covert contact and visible nonperformance make the middle position evidence for both stronger parties and can force the actor into a conflict he had tried to avoid.

Key Claims

• The story sits within Han Wudi’s conquest of Nanyue and the associated southwestern mobilization, revolt, submission, and commandery-building sequence.
• Yu Shan volunteers eight thousand troops to support Yang Pu’s Nanyue campaign but stops at Jieyang and cites rough seas rather than continuing.
• While publicly aligned with Han, Yu Shan secretly communicates with Nanyue and waits to see which side prevails.
• Panyu falls before Yu Shan arrives, making his promised support visibly absent after the outcome is known.
• Yang Pu reports the anomaly and requests a campaign; Han Wudi initially refuses because the soldiers are tired and stations forces around Yuzhang and Meiling.
• Yu Shan then blocks Han routes, sends forces into Baisha, Wulin, and Meiling, kills three Han colonels, and claims imperial status.
• The episode closes with the puzzle of why Yang Pu’s warning is followed by imperial criticism rather than immediate reward.

Key Quotes

“持两端，阴使南越。” — the episode’s received-text formula for maintaining two positions while secretly contacting Nanyue.

“聪明反被聪明误。” — the host’s moral frame for Yu Shan’s failed political calculation.

Connections

• Hanji 354 - direct campaign context: Panyu falls and Nanyue ends before Yu Shan’s promised force arrives.
• 余善, 东越, and 骑墙式战略暴露 - ruler, polity, and failed two-sided strategy at the center of the episode.
• 杨仆 and 揭阳 - commander who detects the nonperformance and the location where Yu Shan’s force stops.
• 汉武帝 and 南越 - imperial decision-maker and the second side of Yu Shan’s covert alignment.
• 夜郎 and 牂柯郡 - southwestern background connecting Nanyue’s fall to local submission and Han commandery expansion.
• Hanji 356-1 and Hanji 356-2 - sequels covering Yang Pu’s rebuke, renewed campaign service, Yu Shan’s death, and Dongyue’s population removal.

Contradictions

• No settled contradiction is adopted. The episode supplies the missing sequence behind Hanji 356-1’s Yang Pu rebuke and Yu Shan campaign.
• Name normalization: “于善” and “杨溥” are routed to 余善 and 杨仆.
• The southwestern names rendered as 居蓝 and 昌都 are not promoted here. The first likely corresponds to 且兰 in the transmitted sequence, but the episode provides no textual apparatus for a firm normalization.
• Exact force totals, routes, places, offices, speeches, private motives, and the wording of Yu Shan’s title claim remain episode-attributed.
• The host’s gambling-and-scheming diagnosis is interpretation; the episode establishes Yu Shan’s reported acts more securely than a complete psychology.