Yin Feng 尹奉

According to the Biography of Yang Fu, when Ma Chao attacked the commanderies and counties of Longshang and besieged the city of Ji, the Inspector Wei Kang and the Administrator in the end opened the city gates and admitted Ma Chao, and Ma Chao had Yang Ang kill the Inspector and the Administrator. After settling on a plan with his cousin Jiang Xu, Yang Fu formed a conspiracy outside the city with his fellow townsmen Jiang Yin, Zhao Ang, Yin Feng, Yao Qiong and Kong Xin and with Li Jun and Wang Ling of Wudu, and they fixed a pact to attack Ma Chao. He also sent his younger cousin Yang Mo to Ji to inform Yang Yue, and allied himself with Liang Kuan of Anding and with Zhao Qu, Pang Gong and others of Nan'an. Records, Wei 25 §25 · 27–30

Once the covenant was settled, in the 9th month of the 17th year of Jian'an (212), Yang Fu raised troops at Lucheng together with Jiang Xu. When Ma Chao came out leading his troops in person, Zhao Qu, Liang Kuan and others released Yang Yue, shut the gates of Ji and attacked Ma Chao's wife and children. Ma Chao raided Licheng, seized Jiang Xu's mother and killed her, and after fighting Yang Fu fled south to Zhang Lu. The Biography of Yang Fu does not record anything Yin Feng did in this fighting. Records, Wei 25 §31–32

The Biography of Xiahou Yuan records this event under the 19th year of Jian'an (214). Zhao Qu, Yin Feng and others plotted to attack Ma Chao, and Jiang Xu raised troops at Lucheng in response. Zhao Qu and the others tricked Ma Chao into going out to attack Jiang Xu and then, behind him, killed all of Ma Chao's wife and children. Ma Chao fled to Hanzhong, then came back and besieged Qishan, and Jiang Xu and the others urgently asked for help. Records, Wei 9 §18

The Annals of Emperor Wu record that in the 1st month, spring, of the 19th year of Jian'an (214), Zhao Qu of Nan'an, Yin Feng of Hanyang and others attacked Ma Chao, killed his wife and children and exposed their heads, and Ma Chao fled to Hanzhong. Thus the Biography of Yang Fu records the same event as an uprising in the 9th month of the 17th year, while the Annals of Emperor Wu and the Biography of Xiahou Yuan record it as an event of the 19th year. Records, Wei 1 §136Records, Wei 25 §31Records, Wei 9 §18

According to the account of Zhang Gong appended to the Biography of Yan Wen in the Records of Wei, when the region west of the Yellow River was in turmoil and Ma Ai, Administrator of Dunhuang, died in office, the Officer of Merit Zhang Gong took charge of the duties of Chief Clerk and sent his son Zhang Jiu to Taizu (Cao Cao) to request an Administrator. At that time Huang Hua of Jiuquan and Zhang Jin of Zhangye each held his own commandery. Zhang Gong separately sent 200 armored cavalry along the northern frontier of Jiuquan and out to Beihe in Zhangye to meet the Administrator Yin Feng, and when Huang Hua went to Su Ze, Administrator of Jincheng, and surrendered, Yin Feng was able to take up his post. In the 2nd year of Huangchu (221) an edict was issued praising Zhang Gong. Records, Wei 18 §87 · 89–90

According to the Biography of Cang Ci, Dunhuang Commandery lay on the western frontier and, cut off by the disorders, had been without an Administrator for twenty years, so that the dominance of the great clans had become the custom. The former Administrators, Yin Feng and others, merely followed old practice and corrected or reformed nothing; Cang Ci, who took up the post in the Taihe era, suppressed the powerful clans and cared for the poor and weak. Chen Shou's main text does not state whether this Yin Feng, Administrator of Dunhuang, is the same man as the Yin Feng of Hanyang who attacked Ma Chao. Records, Wei 16 §92–93