Emperor Wu of Northern Zhou ((北)周武帝) (543 – 21 June 578According to Yuwen Yong's biography in Book of Zhou, he died aged 36 (by East Asian reckoning) during the night of the dingyou day of the 6th month of the 1st year of the Xuanzheng era of his reign. This corresponds to 21 Jun 578 in the Julian calendar. ([宣政元年]六月丁酉，帝疾甚，还京。其夜，崩于乘舆。时年三十六。) Zhou Shu, vol.06. Thus by calculation, his birth year should be 543.), personal name Yuwen Yong (宇文邕), Xianbei nickname Miluotu (禰羅突), was an emperor of the Xianbei-led Northern Zhou dynasty of China. As was the case of the reigns of his brothers Emperor Xiaomin and Emperor Ming, the early part of his reign was dominated by his cousin Yuwen Hu, but in April 572 he ambushed Yuwen Hu and seized power personally. He thereafter ruled ably and built up the power of his military, destroying the rivaling Northern Qi dynasty in 577 and annexing its territory. His death the next year, however, ended his ambitions of uniting China, and under the reign of his erratic son Emperor Xuan (Yuwen Yun), Northern Zhou itself soon deteriorated and was usurped by Yang Jian, who founded the Sui dynasty, in 581.
Background Yuwen Yong was born in 543, as the fourth son of the Western Wei paramount general Yuwen Tai. His mother was Yuwen Tai's concubine Lady Chinu. He was born at Yuwen Tai's then-headquarters at Tong Province (同州, roughly modern Weinan, Shaanxi). He was considered filially pious, respectful, and intelligent in his youth. During six years his father entrusted him and his brother to general Li Xian for his protection and education, as the court had become too dangerous. In 554, Emperor Fei of Western Wei created him the Duke of Fucheng.
Yuwen Tai died in 556, and in spring 557, Yuwen Yong's cousin Yuwen Hu, entrusted with the governing authority by Yuwen Tai, forced Emperor Gong of Western Wei to yield the throne to Yuwen Yong's older brother Yuwen Jue, ending Western Wei and establishing Northern Zhou. Yuwen Jue took the throne as Emperor Xiaomin, but used the alternative title of "Heavenly Prince" (Tian Wang). Yuwen Hu served as regent, and later that year, when Emperor Xiaomin tried to seize power from him, Yuwen Hu deposed Emperor Xiaomin and then killed him, replacing him with another older brother of Yuwen Yong's, Yuwen Yu, who took the throne as Emperor Ming. Emperor Ming created Yuwen Yong the greater title of Duke of Lu and often consulted Yuwen Yong on important matters. Although Yuwen Yong did not speak much, Emperor Ming made the observation, "He did not often speak, but whatever he spoke was always right."
In 559, Yuwen Hu formally returned his authorities to Emperor Ming, and Emperor Ming began to formally rule on governmental matters, but Yuwen Hu retained the command of the military. In 560, Yuwen Hu, apprehensive of Emperor Ming's abilities, had the imperial chef Li An () poison him with sugar cookies. Emperor Ming, realizing that he was near death, designated Yuwen Yong as his successor, and after he soon died, Yuwen Yong took the throne as Emperor Wu. However, the control of the government again fell into Yuwen Hu's hands.
DNA analysis A 2024 genetic study analyzed the genetic makeup of Emperor Wu, determining him to be of primarily Ancient Northeast Asian ancestry (c. 62%), with lower amounts of 'Yellow River farmers' ancestry associated with Han Chinese (c. 32%). The remaining 6% was derived from Western Steppe Herders. It was furthermore revealed that he might have died of a stroke, as he carried several risk-alleles. The study's authors also could reconstruct how he looked like, determining him to have had "a typical East or Northeast Asian facial appearance". A previous study on his wife, Empress Ashina of the early Turkic ruling class, the Ashina tribe, determined her to be of nearly entirely Ancient Northeast Asian ancestry. (This made them far northerners, as at such a recent time "Yellow River" was already predominant even on some territory of today's independent Mongolia)
His face was reconstructed in 2024 using the DNA analysis, CNN posted his reconstructed face.
Early reign Emperor Wu was said to be largely a silent emperor early in his reign, giving Yuwen Hu free rein over the government, although he appeared to start cultivating a group of officials who would be loyal to him as the years went by. He formally bestowed Yuwen Hu with not only the military authorities, but also authority over all six ministries.
With the Liang dynasty general Wang Lin and the throne claimant that he supported, Xiao Zhuang, having been defeated by the Chen dynasty in spring 560 and having fled to Northern Qi, Northern Zhou (and its vassal Western Liang, with Emperor Xuan of Western Liang as its emperor) contended for control of Xiao Zhuang's former territory with Chen, precipitating a confrontation. Starting in winter 560, the Northern Zhou generals Heruo Dun () and Dugu Sheng () began a drawn-out stalemate with the Chen general Hou Tian, initially being successful in thwarting Hou's attacks. Around the new year 561, however, Dugu was forced to withdraw, and Heruo was isolated. In spring 561, Hou agreed to let Heruo withdraw if Heruo would yield, and so Heruo withdrew; the modern Hunan region thus became Chen territory. (Yuwen Hu, believing Heruo to be at fault for losing the region, removed him from his posts.)
Also in 561, Emperor Wu honored his mother Lady Chinu empress dowager.
In spring 562, to foster a peaceful relationship with Chen, Northern Zhou returned the brother of Emperor Wen of Chen, Chen Xu, as well as Chen Xu's wife Liu Jingyan and son Chen Shubao, to Chen. In exchange, Chen gave the city of Lushan (魯山, in modern Wuhan, Hubei) to Northern Zhou.
In summer 562, Emperor Wu, seeing that previously, nobles were not receiving any material benefits from their titles, began to have the nobles receive stipends based on the size of their fiefs.
In spring 563, while on a visit to Yuan Province (原州, roughly modern Guyuan, Ningxia), Emperor Wu suddenly returned to the capital Chang'an without explanation. One of his attendants, Houmochen Chong the Duke of Liang, speculated to his associates that Yuwen Hu had died. When Houmochen's speculations became known, Emperor Wu publicly rebuked Houmochen, and the same night, Yuwen Hu sent troops to surround Houmochen's mansion, forcing him to commit suicide. Soon thereafter, he publicly bestowed Yuwen Hu the honor of having his name be subject to naming taboo, an honor that Yuwen Hu declined.
Also in spring 563, Emperor Wu promulgated a new 25-volume criminal code drafted by the official Tuoba Di (), which divided the criminal punishment into 25 classes.
In fall 563, Northern Zhou entered into an alliance treaty with the Gokturks, known to the Chinese as Tujue, against Northern Qi, part of which involved a promise that Emperor Wu would marry the daughter of Ashina Qijin, Tujue's Mugan Khan. In winter 563, the joint forces of Northern Zhou and Tujue launched a two-prong attack on Northern Qi, with the northern prong attacking Northern Qi's secondary capital Jinyang (晉陽, in modern Taiyuan, Shanxi) and the southern prong attacking Pingyang (平陽, in modern Linfen, Shanxi). The northern prong, commanded by the general Yang Zhong, put Jinyang under siege, but was soon defeated by the Northern Qi general Duan Shao and forced to withdraw. In response, the southern prong, commanded by Daxi Wu (), also withdrew. Still, the attack demonstrated the growing Northern Zhou strength—as previously, in the winter months, Northern Zhou forces would break the ice on the Yellow River to prevent possible Northern Qi attacks, but around this time and thereafter, Northern Qi forces broke the ice on the river to prevent possible Northern Zhou attacks.
In fall 564, in order to placate Yuwen Hu, Emperor Wucheng of Northern Qi returned Yuwen Hu's mother Lady Yan and his (and Emperor Wu's) aunt (Yuwen Tai's sister), who had been trapped in Northern Qi territory several decades earlier, to Northern Zhou. In order to celebrate Lady Yan's return, Emperor Wu issued a general pardon, and prostrated himself before her as an ordinary nephew would. In turn, Yuwen Hu considered calling off planned joint attacks with Tujue against Northern Qi, but was fearful that Tujue would believe that Northern Zhou was abandoning the alliance, and therefore launched another joint attack with Tujue in winter 564. The assault, the main brunt of which was against Luoyang, however, was unsuccessful, and soon was abandoned.
In spring 565, Emperor Wu sent his brother Yuwen Chun () the Duke of Chen, Yuwen Gui () the Duke of Xu, Dou Yi () the Duke of Shenwu, and Yang Jian (楊薦, different person than the more-known Yang Jian, referenced above and below) the Duke of Nanyang, to lead a ceremonial guard corps to Tujue to welcome back Ashina Qijin's daughter for marriage to him. However, when they arrived at Ashina Qijin's headquarters, he turned against the treaty and detained Yuwen Chun and his attendants.
Middle reign In 566, the non-Chinese tribes of Xin Province (信州, modern eastern Chongqing) rebelled and captured Baidicheng, under the leadership of the chieftains Ran Lingxian () and Xiang Wuziwang (). The general Lu Teng (), however, was able to persuade some of Rang's subjects to turn against him, and he subsequently defeated Rang and Xiang, killing them and suppressing the revolts.
In 567, in light of the death of Chen's Emperor Wen and succession by his son Emperor Fei of Chen in 566, the high level Chen officials engaged in infighting, and Emperor Wen's brother Chen Xu was victorious. The general Hua Jiao (), the governor of Xiang Province (roughly modern Changsha, Hunan), felt uneasy, and therefore sought aid from Northern Zhou and Western Liang. Yuwen Hu, over the opposition by the official Cui You (), sent an army commanded by Emperor Wu's brother Yuwen Zhi () the Duke of Wei to assist Hua and Western Liang, which was also aiding Hua. The Chen general Wu Mingche, however, quickly defeated the joint forces of Northern Zhou, Western Liang, and Hua, forcing Hua and Yuwen Zhi to both give up the war and flee to the Western Liang capital Jiangling. Chen was able to retain all of Hua's territory and further make minor territorial gains against both Northern Zhou and Western Liang as well. Yuwen Hu relieved Yuwen Zhi from his posts, and while Yuwen Zhi was eventually restored to them, Yuwen Zhi, who had previously had a cordial relationship with Yuwen Hu, bore a grudge against Yuwen Hu and secretly encouraged Emperor Wu to act against Yuwen Hu.
In spring 568, a major storm at Tujue's headquarters inflicted substantial damage, and Ashina Qijin took it as a sign of divine displeasure at his rescission of the marriage agreement with Northern Zhou. He therefore returned Yuwen Chun, along with the daughter he promised Emperor Wu, back to Northern Zhou. Emperor Wu personally welcomed her and created her empress.
Perhaps in light of the new adversarial relationship with Chen, when Northern Qi made peace overtures in fall 568, Northern Zhou accepted, and there was peace between the states for about a year, until fall 569, when Emperor Wu's brother Yuwen Xian the Prince of Qi led an army to siege Northern Qi's city of Yiyang (宜陽, in modern Luoyang, Henan) -- and for more than a year, the two states would engage in struggle for the control of Yiyang. Meanwhile, in fall 570, the Chen general Zhang Zhaoda put siege to Jiangling, nearly capturing it, but was eventually fought off by Northern Zhou and Western Liang's joint forces.