In the Three Kingdoms, Sima Yi sent Zheng Wen to Shuying to pretend to surrender. He hypothesized that Sima Yi was unfair in his recruitment: Zheng Wenyi came to Qin Lang, but Sima Yi instead sent Qin Lang as the vanguard, so he surrendered in anger. Before he finished speaking, Qin Lang came to challenge. Zhuge Liang sent Zheng Wen to fight and followed him secretly. With just one move, Zheng Wen killed Qin Lang under his horse. Zhuge Liang knew that he was cheating. When he returned to the camp, he said that there were several Qin Lang in Sima Yi's camp, and Zheng Wen was speechless. Zhuge Liang was furious and wanted to kill him. Zheng Wen told him directly. Zhuge Liang ordered Zheng Wen to write a book to lure Sima Yi to rob the stronghold. Sima Yi got the letter and found it to be Zheng Wenzhi's handwriting. He was happy to leave. His son Sima Zhao was careful and advised his father not to go out. He sent Qin Lang to explore the truth first, but he fell into a trap. The Wei army was defeated and Qin Lang died in the chaos.