Kong Ming Borrows Arrows with Straw Boats

Kong Ming Borrows Arrows with Straw Boats is a celebrated stratagem in which Kong Ming answers Zhou Yu’s attempt to place him in a seemingly impossible position by making Cao Cao’s own defenses furnish the required weapons. Asked to provide one hundred thousand arrows in three days, Kong Ming exploits the river, a forecast fog, and Cao Cao’s cautious response to collect them from the northern shore. The episode turns a military supply problem into a contest of intelligence, and makes the successful deception visible to both allies and rivals.

The challenge and its stakes

As the southern forces prepare to fight Cao Cao on the Great River, Zhou Yu declares that they need arrows but do not have enough. He asks Kong Ming to provide one hundred thousand. The request is not simply a logistical assignment: Zhou Yu sets ten days as a reasonable deadline, then watches in surprise when Kong Ming insists that ten days is too long because the enemy may attack sooner. Kong Ming proposes three days instead.

Kong Ming accepts the demand under a military-law pledge: if he fails to deliver in three days, he will accept the punishment due for failure. Zhou Yu regards the pledge as a trap, since failure would mean execution. The deadline therefore carries two stakes at once: the southern forces need arrows for the coming battle, while Kong Ming’s position—and potentially his life—is placed at risk by a rival who believes the task cannot be completed.

Preparing the stratagem

Kong Ming asks Lu Su to lend him twenty boats, each carrying thirty men, and to provide a thousand bales of straw covered with black cloth. He instructs Lu Su not to tell Zhou Yu what he is planning. The materials do not serve to manufacture arrows; instead, they will make the boats appear to be a threatening force while providing surfaces that can collect the projectiles fired in response.

Kong Ming lets the first two days pass without acting. At the fourth watch of the third night, he summons Lu Su and takes him aboard one of the boats, whose unusual cargo is made up of the straw bales. The boats head for Cao Cao’s encampment on the north shore of the Great River. Their timing depends on a dense fog: visibility is so poor that someone standing close by cannot be seen. The concealment is not incidental scenery but the condition that allows a small flotilla to imitate a much larger danger.

Turning the enemy’s defense into a supply line

As the boats near the north shore around the fifth watch, Kong Ming orders the sailors to beat drums and shout, making the approach sound like a large invading force. Lu Su fears that the enemy may attack them. Kong Ming answers that Cao Cao’s men will not venture into such heavy fog. His plan relies on a distinction between what the defenders can hear and what they cannot see: the noise suggests an assault, while the fog prevents them from identifying the boats or judging their numbers.

Cao Cao hears of the apparent attack and orders his men to fire into the fog. He commits the archers and crossbowmen to the defense, and ten thousand of them shoot toward the sound. Their response is precisely what Kong Ming needs. Arrows strike the black-covered straw bales as the boats draw close to shore, while the sailors maintain the noise that keeps the defenders firing at an unseen target.

When the sun rises and the fog begins to lift, Kong Ming orders the boats to turn back. Each of the thousand bales is now bristling with arrows. Cao Cao’s men cannot mount a counterattack before the boats have made their escape. As they depart, Kong Ming calls out to thank the Prime Minister for sending the arrows, making the deception explicit rather than concealing it as a quiet success.

Delivery and significance

Kong Ming estimates that each boat has collected around five to six thousand arrows. By his calculation, the flotilla has secured more than the required one hundred thousand, without cost to the southern forces. The stratagem thus resolves the original shortage by converting Cao Cao’s defensive resources into the supplies his opponents need. Its success rests on the coordinated use of a deadline, river access, prepared boats and cargo, concealment, sound, and an accurate expectation of how an unseen threat would be answered.

The five hundred men Kong Ming had asked to stand ready meet the boats at the shore, and the arrows are delivered to Zhou Yu as promised. Lu Su tells Zhou Yu how the plan worked. Zhou Yu can only respond with a sigh of admiration and regret: Kong Ming has fulfilled the demand that was meant to endanger him, and done so through an expenditure by the enemy rather than the southern forces. The episode’s reversal is complete—the supposed victim of Zhou Yu’s test emerges with the arrows, while Cao Cao has once again been deceived.