孙膑
Pang invited Sun Bin to join him in serving the Wei state later but he was actually secretly jealous of Sun because Sun learnt more from their teacher than him. Pang Juan framed Sun Bin on charges of treason later and reported Sun to King Hui. The king believed Pang and was furious, that he ordered Sun Bin to be executed. Pang pretended to plead for mercy on Sun's behalf and the king agreed to spare Sun's life. Sun was condemned to face-tattooing (criminal branding) and had his kneecaps removed, becoming a cripple. Pang pretended to take pity on Sun and tried to trick him to compile his knowledge about military strategy into a book and kill him later. But some servants told Sun Bin the truth and Sun Bin discovered Pang's true intentions and feigned madness. Sun escaped from Wei with the help of officials from the Qi state and became an important strategist and statesman in Qi later.