Stratagem No. 25 第二十五计 Proximate stratagems (并战计)
Steal the beams, swap the pillars
Literal
Steal the beams and swap the pillars.
In a joint effort, move the other side’s best people out of the posts that hold them up, then take over what sags.
Source line
频更其阵，抽其劲旅，待其自败，而后乘之，曳其轮也。
Traditional 頻更其陣，抽其勁旅，待其自敗，而後乘之，曳其輪也。
Keep changing their formation, draw off their best troops, wait until they fail of themselves, and then exploit it. Drag the wheel.
Icons working translation — draft, pending review
‘Drag the wheel’ is the first line of the hexagram Jiji (Already Across): he brakes as he crosses, and so comes to no harm. Here the repeated small changes are the brake on an ally’s array, until it can no longer roll on its own and you ride what is left.
三十六计 · Chinese Wikisource edition (public domain)
Meaning
Steal the beams and swap the pillars means a joint formation is held up by a few posts, and those posts are people. The commentary uses camp language. A formation has a length and a width. The crossbeam, it says, is the ‘heavenly balance’; the pillar is the ‘earth axis’; both are manned by elite troops. Look at the array and you know where the real strength stands. While you and an ally are fighting some third party, you keep ‘reorganising’. Each change pulls his best troops off those posts, or puts yours onto them.
When the posture is yours and his formation folds, you annex his soldiers. The commentary calls this the first policy for joining one enemy in order to strike another. It is a slow sabotage of a partnership, done under the name of staff work. The facade of the alliance stays up. The load-bearing parts have been replaced. Readers who meet only the proverb think of a swindle in a contract. The text is more specific, and more military: it is about who stands in the posts that stop an army from falling in on itself.
The story
Xiang Yu divides the kingdoms, 206 BC 项羽分封
History
The stratagem text describes that manoeuvre and names no battle. What it describes is a secret swap inside a shared camp: change the roster until the other commander’s best troops no longer hold his beams, or until your officers stand where his beams were, and then inherit the army. The nearest famous act is coarser, and it was done in public. In 206 BC, after the fall of Qin, Xiang Yu was the strongest of the rebel leaders. He did not leave the coalition as he had found it. He carved the old empire into eighteen kingdoms and decided who stood in each load-bearing seat.
He made himself Hegemon-King of Western Chu, on the rich central ground. He put three surrendered Qin generals, Zhang Han, Sima Xin and Dong Yi, on thrones inside the passes, so that the country which had just been conquered would be held by men the conquered hated. He sent Liu Bang, who had taken the Qin capital, out to be King of Han in the remote river valleys of Hanzhong and Shu. The facade was a restoration of kings after a tyrant. The beams had been moved to where Xiang Yu wanted them, and the man he most needed to park had been parked.
The likeness stops where the secrecy starts. An open division can be seen, resented, and fought, and this one was: Liu Bang came back out of Hanzhong, and the eighteen kingdoms did not stand. A swap done inside an allied camp, by repeated ‘reorganisation’, is noticed only when the ally reaches for his best troops and finds they answer someone else. That is the trick the text is actually teaching. Xiang Yu shows the prize and the risk of the coarser version. He moved the pillars in daylight, and the building came down on the architect as well as on the guests.
Xiang Yu’s division of the kingdoms in 206 BC is in Sima Qian’s Shiji, while the stratagem text itself describes a secret swap of elite troops inside a joint array and names no campaign, so the enfeoffment is only the open political cousin of a hidden camp manoeuvre.
Sources
- Sima Qian, Shiji 史记, ch. 7 (Xiang Yu) and ch. 8 (Gaozu)
Myth check
Pop history often equates this proverb with Zhao Gao forging the succession of Qin, a different crime told in the Shiji. The stratagem text is about formations — draw an ally’s elite off the posts that hold his array, then annex the array — and it is not a line of Sun Tzu.
Modern application
Joint ventures and coalition campaigns die this way more often than they die in a vote. One partner ‘streamlines’ the roster, loans in his own seniors, moves the other partner’s specialists onto side tasks, and keeps the joint brand on the door. By the time anyone objects, the people who knew the customers, the code, or the troops are reporting elsewhere. The minutes still say it is a partnership. The beams have already been swapped.
The defence is structural, not rhetorical. Name the load-bearing posts at the start, in writing, and make a change of incumbent a decision for both sides. Treat a sudden love of reorganisation, during a fight against a third party, as the stratagem itself. The third party is real. The reorganisation may be the actual campaign. Count the posts again after every temporary loan.
Takeaways
- Name the load-bearing posts before the joint work starts.
- Treat a reshuffle in mid-campaign as a hostile act.
- Keep your best people in posts you still control.
How to counter it
In a partnership, list the few roles the work cannot survive without, and require joint consent to move anyone out of them. If the other side starts ‘temporarily’ borrowing those people while you face a third party, assume the array is being emptied.
Questions
What does steal the beams and swap the pillars mean?
It means hollowing out a partner’s formation while the alliance still looks intact. In the commentary the beams and pillars are the posts held by elite troops. You keep changing the joint array until those troops are yours, or gone, and then you take over his soldiers. The proverb is now used for any secret substitution. The text is this military one.
Is this the same as replacing a leader in secret?
A secret change of leader is the political cousin, and people often cite palace forgeries. The classical line is narrower: repeated changes of formation, in a joint war, that pull the best troops off the posts holding the array together. Xiang Yu’s public division of kingdoms in 206 BC shows the prize of moving pillars, and also how an open move gets resisted.