In December of the sixth year, Cao Cao left Chen, Xia Cao was named Sima, and Qi was named a surname.
In the early years of Jian 'an, he moved to Liuchen State and then to Yingchuan State.
In August of the fifth year of Jian 'an, Cao Cao and Yuan Shao fought in Guandu, with Xia as the commander in chief. In October, Yuan Shao suffered a crushing defeat, and the army was short of food in advance when the summer capital transported rations to Yanzhou, Yuzhou and Xuzhou. Real-time transportation of materials in summer, the military situation resurfaced. In the same year, Xia Wu's thirteen or fourteen-year-old daughter went out to collect firewood, earned it for Zhang Fei and married someone.
In the sixth year of the Five Pings Rebellion, Xuanyue and Yuan Shao sent Liu Bei to attack Runan. Chang Fu rebelled against Liu Bei, and Xia and Zhang Liao surrounded him in the East China Sea. A few months later, they ran out of food, so they were ready to retreat. Zhang Liao remonstrated that Chang Yu had the will to surrender, but hesitated and dared not respond, so he said surrender. Then he sent an envoy to Chang Yu, but failed. See Cao Cao and Zhang Liao.
In August of the 11th year of Jian 'an, Changshang rebelled again. Cao Cao was seconded to the forbidden attack, but he couldn't. Then Xia and Yu Jin were sent to attack Changban and occupied more than ten of his strongholds. Because Chang Shang was familiar with Yu Ban, he went into the camp to rebel, was "surrounded and then fell" and beheaded Chang Shang. After returning to the army, Xia Bai became a captain of the Canon Army. In advance, the army often fought by surprise, and there was a saying that "Xia is a captain of the standard army, which can be 500 miles in three days and thousands of miles in six days."
In the twelfth year of Jian 'an, in October of the four seasons, Jinan, the lean Yellow Scarf Army Xu He, Sima Ju and other departments invaded and plundered the city, killing Jinan Wang Yun and other officials and immediately died. Xia led troops from Mount Tai, Qi and Pingyuan to crush and recover the counties, and collected their grain to supplement the rations.
In the fourteenth year of Jian 'an, Cao Cao took Xia as his ally. In December, Cao Cao asked Sun Quan, and then returned to the DPRK to pay homage. Lujiang people rebelled in Meicheng and three counties, and Cao Cao hired Xia's general Hou to suppress them.
In the first month of the sixteenth year of Jian 'an, according to the rebellion of Yao in Daling and Taiyuan, Cao Cao led Xia Xi to levy a guard, and Huang Xu, the supervisor, captured more than 20 strongholds, beheaded Yao and slaughtered Daling. In March, Cao Cao ordered Zhong You, a captain, to crusade against Zhang Lu in Hanzhong, and ordered Xia and others to lead the troops out of Hedong to join forces with Zhong You. In August, Xia conquered Ma Chao and Han Sui from Cao Cao, and the two sides fought in Weinan. On June+10 in 5438, Huang Xu, Zhu Ling and other governors met Cao Cao's leisure time and went to join Yang Qiu. In December, Cao Cao returned to the army at leisure and stayed in Chang 'an in the summer.
In the first month of the seventeenth year of Hu Guanyou's Jian 'an, Cao Cao returned to Yecheng, and in the summer he guarded the soldiers for the general and stationed in Chang 'an. Break thousands of rebels at the intersection of Wuguan and drop troops. Xiong Liu fled to Hanzhong. In July, Han Sui, stationed in Lantian, Chungking, xia yang and other places, left Feng Yi in Koulue area. Xiahou Zheng Yuan Xiongnu led local soldiers and civilians to help each other, led troops to encircle and encircle, beheaded Liang Xing and killed xia yang. With this achievement, Cao Cao named him Hou of Bochang Pavilion.
In the first month of 2 13, Ma Chao annexed all the people in Longyou. Zhang Lu also sent general Yang Ang to help Ma Chao, and gathered more than 10,000 people to besiege Wei Kang, the secretariat of Liangzhou, Ji Cheng. Wei Kang lived there for eight months. In the summer, Wei Kang sent Yan Wen for help. Captured by Ma Chao, Ma Chao refused to surrender and was killed by Ma Chao. Before the arrival of summer reinforcements, Wei Kang had defected to Ma Chao and was killed by Ma Chao. When Xia invaded more than 200 Li, Ma Chao led the troops to attack, which was unlucky. Just as Yang opposed Ma Chao, Xia withdrew. Xuan Yue, Yang Fu, Jiang Xu, Zhao Qu, Yin Feng, etc. Begging Ma Chao to kill his wife, Ma Chao rushed to Hanzhong to vote for Zhang Lu.
In the spring of Jian 'an 19th year, Ma Chao recruited Zhang Lu's soldiers, took Liangzhou in the north and surrounded Qishan. Jiang Xu and others urgently asked Xia for help. The generals thought that they should follow Cao Cao's instructions, while Xia thought that they should travel thousands of miles. Jiang Xu and others will be defeated after receiving instructions from Cao Cao, so this is not suitable for emergency. After the negotiation, he sent troops immediately. First, Zhang He cavalry with a salary of 5,000 was sent to take a shortcut to Chencang Avenue to invade, and then the transportation of grain and grass was supervised. When Zhang arrived at Weishui, Ma Chao led thousands of Bian and Qiang troops to attack. However, the two armies of Ma Chao retreated without a fight, and Zhang He later took what Ma Chao left behind. When Xia's army arrived, all the counties had defected.