Yin Damu 尹大目

In Chapter 107 of the Romance, when Sima Yi stages his coup, the Minister of Agriculture Huan Fan slips out through the city gate and flees to Cao Shuang. Sima Yi summons Xu Yun and Chen Tai and has them go to Cao Shuang and tell him that the Grand Tutor has no other aim and only wishes to take away the military authority of him and his brothers; he also summons Yin Damu, Colonel of the Palace (dianzhong xiaowei), and sends him off with a letter he has had Jiang Ji write. Sima Yi instructs Yin Damu, 'You are on close terms with Cao Shuang, so you are fit for this task,' and tells him to say that Sima Yi has sworn together with Jiang Ji, pointing to the Luo River, that this is only a matter of military authority and that he has no other intention. Romance, Ch. 107 §8–9

Cao Shuang, who is out hunting, receives Sima Yi's memorial and is at a loss, and Huan Fan presses him to take the Son of Heaven to Xudu, summon troops from outside and attack Sima Yi. After Xu Yun and Chen Tai come and tell him that the aim is only to take away his military authority and that he should return to the city quickly, Yin Damu arrives and says, 'The Grand Tutor has sworn by pointing to the Luo River, and has no other intention whatsoever. Here is a letter from Grand Commandant Jiang. General, lay down your military authority and return quickly to the ministerial residence.' Cao Shuang believes these to be good words. Romance, Ch. 107 §10 · 13–17

Huan Fan tells him not to listen to outsiders and go to his death, but Cao Shuang, after wavering all night, throws down his sword and says that he will not raise troops but will give up office and live as a rich old man. Following the advice of Xu Yun and Chen Tai, Cao Shuang first sends his seal and ribbon to Sima Yi, and the soldiers, seeing that the general's seal is gone, all scatter. Romance, Ch. 107 §17–19

In Chapter 110, Wen Qin arranges with his son Wen Yang to attack by night from the south and the north separately and meet in the Wei camp, but he loses his way on the mountain paths, misses the time and flees to Shouchun. The Romance records that at this time Yin Damu, Colonel of the Palace of Wei, was a trusted follower of Cao Shuang; because Cao Shuang had been killed through Sima Yi's scheme he had served Sima Shi thereafter, but he always harbored the wish to kill Sima Shi and avenge Cao Shuang, and he had long been on close terms with Wen Qin. Seeing that Sima Shi's eyeball has burst out of his tumor and he cannot move, Yin Damu tells him that Wen Qin never had any intention of rebelling but was merely coerced by Guanqiu Jian, and that if he goes to persuade him, Wen Qin will surely surrender. Romance, Ch. 110 §15 · 21–22

Given Sima Shi's permission, Yin Damu puts on his helmet and armor, gallops after Wen Qin and cries, 'Inspector Wen, do you see me, Yin Damu?' When Wen Qin looks back, he takes off his helmet, sets it on the front of his saddle and, pointing with his whip, says, 'Inspector Wen, why can you not hold out a few more days?' The Romance records that Yin Damu, knowing that Sima Shi would soon die, had come deliberately to hold Wen Qin back. Wen Qin fails to grasp his meaning, curses him in a harsh voice and draws his bow to shoot, and Yin Damu turns back weeping bitterly. Wen Qin afterwards goes to take refuge with Sun Jun of Eastern Wu. Romance, Ch. 110 §23–24