Pang Juan
In 342 BC, the Wei army led by Pang Juan invaded the Han state, an ally of the Qi state, and Han requested help from Qi. Sun Bin and Tian Ji were put in charge of the Qi army again to counter the Wei forces. Sun used a strategy of feigning defeat in a series of skirmishes with the Wei forces, in order to lure Pang Juan to pursue him. Sun ordered the Qi troops to reduce the number of cooking stoves they used, to create a false impression that the Qi army was shrinking in size. The pursuing Wei forces led by Pang Juan spotted the trend by observing the marks left behind by the stoves, and Pang fell for Sun Bin's ruse. Eager to defeat Sun Bin, Pang continued the pursuit and fell into an ambush in a narrow valley laid by the Qi forces. The Wei army suffered a crushing defeat at the Battle of Maling and Pang Juan committed suicide, while the crown prince of Wei was captured by the Qi forces. In traditional folklore, Sun Bin carved the words "Pang Juan dies under this tree" on a tree in the ambush area. When Pang arrived there, he saw that there were carvings on the tree so he lit a torch for a closer look. Right then, using the torch as the target, the Qi troops lying in ambush attacked. Pang committed suicide after being hit by many enemy arrows.