《资治通鉴·秦纪》105｜战争花样赵国李牧最会耍

Summary

This 芮淇讲透资治通鉴 episode continues early 嬴政 / 秦始皇 chronology into 244 BCE: even during famine, 秦国 keeps attacking east, and 蒙敖 takes twelve Han cities from 韩国. In 赵国, 赵道襄王 moves from the failed recovery of 廉颇 to using 李牧, who attacks 燕国 and takes 五遂 and 方城.

The main body then reconstructs Li Mu’s northern-frontier strategy against 匈奴. Li Mu governs the Dai and Yanmen border with unusual autonomy, stores revenue as military funds, feeds and trains soldiers, watches beacons, sends spies, and forbids unauthorized sorties, letting repeated non-battle preserve people, livestock, and morale until the enemy believes he is timid.

The episode’s core claim is that Li Mu’s apparent avoidance is frontier defensive patience, not cowardice. Because weakened Zhao cannot afford Han Wudi-style deep steppe expeditions, Li Mu uses nomadic cavalry raiding asymmetry against the raiders: he exposes pasture as bait, feigns retreat, sacrifices a small party, draws the Xiongnu main force deep, then encircles it in a decisive strike.

Key Claims

• In 244 BCE, Qin suffers famine but still continues eastward warfare because limited campaigns can supplement state resources through plunder rather than only consume them.
• Han is depicted as nearly unable to resist by this point; Meng Ao attacks Han and captures twelve cities.
• After Lian Po leaves Zhao, Zhao Daoxiang Wang appoints Li Mu, who proves effective by attacking Yan and taking 五遂 and 方城.
• The episode treats Li Mu’s northern defense as a retrospective explanation of why he becomes Zhao’s next great commander.
• Northern nomadic raiders are described as mobile, horse-archery-centered, and opportunistic: they fight when advantage is available and withdraw when it is not.
• The episode explains northern walls as a defensive answer to repeated border raiding, and says Qin Shi Huang later links preexisting Qin, Zhao, and Yan wall systems into a more continuous anti-Xiongnu barrier.
• Li Mu’s frontier command includes local appointment power, tax revenue directed to his camp, daily meat and drink rewards for soldiers, cavalry and archery training, beacon discipline, and intelligence work.
• His standing order is that if Xiongnu forces enter, Zhao forces should withdraw people, livestock, and stores into fortified positions and not fight without authorization.
• Zhao Xiaocheng Wang removes Li Mu after this policy is criticized as cowardice, but the replacement commander repeatedly fights and loses, disrupting border farming and herding.
• Li Mu returns only after securing permission to continue the old policy, which the source presents as the condition for making the strategy work.
• Once soldiers are rested, rewarded, and eager to fight, Li Mu lets people and livestock appear outside the fortress line, stages retreat, and lets the Xiongnu capture a small party.
• The Xiongnu chanyu takes the bait and enters with a main force; Li Mu uses multiple formations, frontal fixing, flanking, and rear-cutting movement to destroy the attacking force.
• The episode says Zhao kills more than 100,000 Xiongnu cavalry, the chanyu flees, Li Mu then attacks 襜褴, Donghu, and Linhu, and Xiongnu forces avoid the Zhao frontier for more than ten years.
• The episode contrasts this with Han Wudi’s later offensive war: deep pursuit of Xiongnu cavalry requires rich state resources, while post-Changping Zhao can only fight a low-cost, terrain-close decisive battle.
• The closing previews Li Mu’s later confrontation with 王翦 in the Qin-Zhao final phase.

Key Quotes

“富贵仗” - the source’s shorthand for the resource-intensive Han Wudi-style offensive war that Zhao cannot afford.

“能打也要装作不能打，想打也要装作不想打” - the episode’s Sunzi-style summary of Li Mu’s feigned weakness.

Connections

• Qinji 104, 廉颇, 赵道襄王, and 郭开 - continuation from Lian Po’s failed recall into Zhao’s next usable commander.
• 秦国, 嬴政 / 秦始皇, 蒙敖, 韩国, and 秦国东进压力 - 244 BCE Qin-Han pressure even during famine.
• 李牧, 赵国, 燕国, and 王翦 - Zhao commander branch from the Yan campaign to the later Qin-Zhao showdown preview.
• 匈奴, 游牧骑兵劫掠不对称, and 战国北境长城 - northern frontier context.
• 边境防御耐心, 诱敌离位, 战场信息控制, and 《孙子兵法》 - Li Mu’s long non-battle, feigned weakness, bait, and final encirclement.
• 战争成本与速决纪律 and 战国军事形态转变 - resource limits and mass infantry-against-cavalry battle frame.
• 嬴政 / 秦始皇 and 汉武帝 - later imperial comparison points used by the episode for wall integration and expensive Xiongnu campaigning.

Contradictions

• No direct contradiction with existing wiki content found.
• Source-scope caution: the troop count of “more than 100,000” Xiongnu cavalry killed and the claim that Xiongnu forces avoided Zhao’s border for more than ten years are recorded as the episode’s narrative claims, not independently reconciled here.
• Source-scope caution: the episode’s compact Great Wall summary is kept as a broad interpretive frame; it is not treated as a full chronology of every Qin, Zhao, Yan, or Qin Shi Huang wall-building phase.
• Source-scope caution: the contrast with Han Wudi, Wei Qing, and Huo Qubing is used to explain resource scale, not as a full account of Han-Xiongnu war chronology.