Yin Damu

Historical Record

Yin Damu has no clear record in the official histories; his deeds and life are not mentioned in biographical materials such as the Records of the Three Kingdoms. This indicates that the figure of Yin Damu and his activities within the Cao Wei regime are chiefly the product of literary creation rather than a true historical record. It is therefore impossible to give an objective account or verification of him from biographical sources.

In the Novel

In Romance of the Three Kingdoms, Yin Damu is a figure of complexity and tragic coloring; though his appearances are few, he plays an important role at key historical turning points. He first appears after Sima Yi launched the Incident at the Gaoping Tombs, when Cao Shuang was trapped south of the Luo River. To lure Cao Shuang into surrender, Sima Yi summoned Yin Damu and ordered him to go and persuade Cao Shuang to yield. Knowing well that Yin Damu was on close terms with Cao Shuang, Sima Yi pointedly instructed him: "You are close to Shuang and may take on this task. Tell Shuang that I and Jiang Ji have sworn an oath by the Luo River, and that this is only a matter of military authority, with no other intent."^[1] Yin Damu went as ordered, conveyed Sima Yi's "oath" to Cao Shuang, and brought Jiang Ji's letter, urging Cao Shuang to relinquish his military authority and return early to the chancellor's residence. In his hesitation and indecision, Cao Shuang heeded the persuasions of Yin Damu, Xu Yun, Chen Tai, and others, and in the end gave up resistance, leading to the destruction of the Cao clan^[2].

Yin Damu's second appearance comes during Sima Shi's tenure of power. By then he was an Inner Palace Colonel of Wei, but deep down he could not let go of Cao Shuang's death and often harbored thoughts of avenging him. He had always been on good terms with Wen Qin; when Wen Qin raised troops in revolt against Sima Shi, Yin Damu, seeing that Sima Shi's eye ailment had worsened, seized the chance to advise Sima Shi that Wen Qin was not truly bent on rebellion and offered to go and persuade him to surrender. After Sima Shi consented, Yin Damu donned helmet and armor and pursued Wen Qin. Removing his helmet and pointing at Wen Qin with his whip, he cried out: "Inspector Wen, why can you not endure a few more days?"^[3] This hinted that Sima Shi was about to die of illness, hoping Wen Qin would hold off so as to await the right moment. Wen Qin, however, failed to grasp his deeper meaning and instead cursed him fiercely, made to draw his bow and shoot. Yin Damu could only return weeping bitterly. This episode displays Yin Damu's loyalty to Cao Shuang and his discontent with the Sima clan, as well as his efforts to influence the situation in his own way, which in the end failed. In the novel, Yin Damu's image is that of a tragic figure loyal to his former lord yet not master of his own fate.

Key Relationships

* Cao Shuang (betrayed_by): Yin Damu was on deep terms with Cao Shuang and was used by Sima Yi to persuade Cao Shuang to surrender. Although Yin Damu acted under orders and conveyed Sima Yi's "oath," Cao Shuang in the end lost his life through heeding the persuasion to surrender; judged by the outcome, Yin Damu indirectly brought about Cao Shuang's defeat and death. After Cao Shuang's death, Yin Damu often harbored thoughts of avenging him, showing his loyalty to and regret for Cao Shuang. (unique to the novel)
* Wen Qin (friend_of): Yin Damu and Wen Qin shared a deep friendship. When Wen Qin raised troops against Sima Shi, Yin Damu tried to persuade Wen Qin, hinting that Sima Shi was about to die and hoping Wen Qin could endure a few more days to await the right moment. Wen Qin, however, failed to understand his meaning and instead misjudged Yin Damu, so that Yin Damu's efforts came to nothing. (unique to the novel)
* Sima Yi (manipulator): Knowing well the relationship between Yin Damu and Cao Shuang, Sima Yi, after the Incident at the Gaoping Tombs, used Yin Damu to go and persuade Cao Shuang to surrender, successfully breaking down Cao Shuang's will to resist. Sima Yi's use of Yin Damu reflects his crafty, far-sighted side. (unique to the novel)
* Sima Shi (target_of_revenge): Because Cao Shuang was murdered by Sima Yi, Yin Damu harbored thoughts of revenge against Sima Shi. He once tried, by persuading Wen Qin, to indirectly oppose Sima Shi, hinting that Sima Shi was about to die, thereby expressing his loyalty to Cao Shuang and his discontent with the Sima clan. (unique to the novel)

Signature Scenes

* Persuading Cao Shuang to surrender: After the Incident at the Gaoping Tombs, Sima Yi summoned Yin Damu and ordered him to take Jiang Ji's letter and go persuade Cao Shuang to surrender. Yin Damu conveyed to Cao Shuang Sima Yi's promise that he had "sworn an oath by the Luo River, that it was only a matter of military authority, with no other intent"^[1]. This scene directly brought about Cao Shuang's surrender; it is Yin Damu's first and most crucial appearance in the novel, profoundly shaping the course of the Cao Wei regime. (unique to the novel)
* Pursuing Wen Qin: When Wen Qin raised troops against Sima Shi, Yin Damu donned helmet and armor to pursue him, then removed his helmet and pointed at Wen Qin with his whip, crying out: "Inspector Wen, why can you not endure a few more days?"^[3] This scene displays Yin Damu's loyalty to Cao Shuang and his discontent with the Sima clan, as well as his efforts to influence the situation in his own way, which in the end failed. This is the signature scene in the novel that reveals Yin Damu's complex inner life and tragic fate. (unique to the novel)