Wen Yang, the younger son of Wen Qin, enters Romance of the Three Kingdoms at eighteen with the childhood name A-Yang. At Lejia he proposes a two-pronged night attack on Sima Shi’s camp. His father fails to arrive at the agreed time, but Wen Yang rides into the enemy lines again and again, shouting challenges and throwing the camp into panic. The shock is so severe that Sima Shi’s recently treated eye bursts from its socket.
At dawn Wen Yang meets Deng Ai and fights him for fifty bouts without a decision. Forced to withdraw, he is pursued by hundreds of cavalry. He repeatedly turns back alone, wielding spear and steel whip, strikes down several men, and scatters the rest before returning to his father. The sequence gives him one of the novel’s clearest displays of young martial daring: an assault begun with flawed support becomes a withdrawal controlled by his own nerve and strength.
Later Wen Qin joins Zhuge Dan at Shouchun, but quarrels within the besieged city end with Zhuge Dan killing him. Wen Yang and his brother Wen Hu fight their way to the wall, leap the moat, and surrender to Sima Zhao. Although Wen Qin had helped bring about Sima Shi’s death, Zhong Hui advises mercy. Sima Zhao pardons the brothers, grants them rank, and sends them around Shouchun to announce clemency. Their survival weakens the defenders’ will, and Wen Yang ends the novel’s account not as a condemned rebel, but as a former enemy absorbed into Wei service.