With Japanese forces roughly 40 days from a single river chokepoint and a year's worth of shipping still stuck on the docks, Lu Zuofu stopped sending ships end to end and split the route into three so each hull only ever worked the stretch it was built for.

问题

one bottleneck route has far more to move through it than its capacity allows in the time available

背景

换别人会怎么做

The straightforward plan was to load whichever ship was available and send it the full distance from Yichang to Chongqing end to end, unload, and repeat — treating capacity as a function of how many ships could be run through the whole route, one trip at a time.

他们看到了什么

Lu Zuofu saw that different stretches of the same river route posed completely different physical constraints, fast open water near Yichang against shallow, rapid-choked water near Chongqing, and that forcing every vessel to run the full route wasted each ship's most valuable hours on stretches it wasn't suited for. The fix wasn't more ships running the whole route, it was segmenting the route by its actual physical constraints and matching each vessel type to only the segment it was genuinely built for.

那一手

Lu Zuofu split the Yichang-to-Chongqing route into three distinct segments and matched each type of vessel to the segment its hull and engine actually suited, rather than sending every ship the full distance — a method he had already tested during a 1936 drought. He requisitioned roughly 2,000 additional wooden boats from Chongqing and Hubei to cover the segments large steamers couldn't handle, and restructured the schedule so loading and unloading happened at night while ships ran at full speed by day, keeping the fleet in near-continuous motion instead of idling dockside during cargo transfers.

为什么管用

Splitting the single end-to-end route into three distinct segments let large, fast steamers work only the open-water stretch they were efficient on, while roughly 2,000 requisitioned wooden boats covered the shallow, rapid-choked stretches steamers couldn't handle at all — so no vessel wasted time or capability on a segment mismatched to its design, and the same fleet moved more total cargo per unit time than it would running end-to-end. Restructuring loading and unloading to happen at night while ships ran at full speed by day let cargo transfer and transit happen in parallel across the fleet rather than each ship separately absorbing idle loading time as a sequential cost. Because segments could be worked simultaneously and independently rather than each ship needing to complete a full slow round trip before the next load could start, total throughput through the bottleneck increased dramatically, compressing what planners had estimated at about a year into 40 days.

值了多少

Over 40 days from late October to early December 1938, the operation moved more than 30,000 people and over 100,000 tons of equipment and supplies from Yichang to Chongqing, under intermittent Japanese aerial bombardment; Minsheng Company itself lost 16 ships and 116 employees killed, with 61 more disabled, in the effort. The rescued machinery went on to produce hundreds of thousands of grenades, mortar shells and bombs per month for the rest of the war, and by June 1940 the broader wartime relocation effort Lu's methods enabled had moved more than 1.5 million people and over a million tons of cargo upriver in total.

什么时候会失灵

The mechanism depends on the bottleneck route genuinely having different physical or operational constraints across its length that different equipment types can specialize against — a uniform route offers no segments to differentiate, and splitting it creates no efficiency gain since every vehicle faces the same conditions everywhere. It also requires access to, or the ability to quickly acquire, the different specialized equipment each segment actually needs — Lu's plan depended on requisitioning roughly 2,000 additional wooden boats on short notice, a real capacity constraint a less resourceful operator might not have solved. And the night-loading, day-transit restructuring required real operational discipline and coordination across the whole fleet to execute reliably under wartime pressure, including genuine casualties and losses — the gains from segmentation don't materialize automatically from the idea alone, they require genuinely difficult execution under real physical risk.

后来呢

The 1938 Yichang evacuation is remembered in Chinese industrial history as 'the Dunkirk of Chinese industry,' a phrase credited to the educator Y.C. James Yen, and Lu Zuofu's three-stage segmented-navigation method is cited as the operational core of how China preserved its industrial base to keep fighting after losing its eastern cities — a route-segmentation logic later echoed wherever an operation faces the same shape of problem: one hard bottleneck, mismatched equipment, and a fixed deadline.

资料来源

1. [1]抗战信物·时空对话｜历时40天的救亡奇迹：卢作孚与“宜昌大撤退”中国日报网 (China Daily), 2025cn.chinadaily.com.cn
2. [2]Top 10 influential businessmen of modern China — Lu ZuofuChina.org.cn, 2011china.org.cn
3. [3]Lu ZuofuWikipedia, 2026en.wikipedia.org

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