In 573, Emperor Xuan wanted to launch a campaign against Northern Qi to capture the region between the
Yangtze River and the
Huai River. The officials that he discussed with had diverse opinions, but Wu Mingche was the one who advocated quick action. Emperor Xuan decided to carry out attack, and because Chunyu Liang was the senior general, most officials believed that he should command the mission. Xu Ling (), however, advocated making Wu the commanding general, pointing out that Wu was a good general and that his family was from north of the Yangtze and therefore he was familiar with the customs of the region. Emperor Xuan therefore put Wu in charge of the main assault, while putting the general Huang Fachu (name not in
Unicode) in charge of the secondary front. Wu quickly captured his home commandery (Qin Commandery). Northern Qi sent forces commanded by the general Wei Pohu () to try to stop Wu's advance, but Wu's subordinate
Xiao Mohe defeated a group of Northern Qi's best warriors, leading to the Northern Qi army's collapse. Most of the territory south of the Huai River was quickly captured, and as Qin Commandery was Wu's home commandery, Emperor Xuan, in order to honor him, ordered him to publicly offer a sacrifice of an ox, a pig, and a sheep to his ancestors. By fall 573, Wu had the important city of Shouyang (壽陽, in modern
Lu'an,
Anhui), defending by Wang Lin, under siege, and although he could not capture it quickly, he did when the Northern Qi relief force commanded by Pi Jinghe () arrived but was hesitant to engage him. He captured Wang, Lu Qian (), Kezhuhun Daoyu (), and Li Taotu (). Pi fled, and Wu captured his horses and camels. Because many of Wu's officers were Wang's subordinates and respected him, Wu became apprehensive and executed Wang, delivering the other Northern Qi officials to Jiankang. The region between the Yangtze and the Huai was now entirely in Chen hands, and Emperor Xuan created Wu the greater title of Duke of Nanping. He also put Wu in charge of the six provinces making up of the region. (In order to confer the honors on Wu, he had a high platform built near Shouyang and had Wu ascend the platform to accept these honors, and the entire army felt honored on Wu's account.) In winter 575, Wu launched an attack on Pengcheng (彭城, in modern
Xuzhou,
Jiangsu). However, he appeared to soon withdraw. In 576, he was made the governor of Southern Yan Province (南兗州, roughly modern
Yangzhou,
Jiangsu). In 577, Northern Zhou destroyed Northern Qi and took over its territory. In winter 577, Emperor Xuan, believing that Northern Zhou's hold on Northern Qi's southern provinces was not yet secure, ordered Wu to launch a major attack on Pengcheng, making Wu's
heir apparent Wu Rongzhao () his lieutenant. Initially, Wu defeated the Northern Zhou governor of Xu Province (徐州, roughly modern Xuzhou) Liang Shiyan (), forcing Liang to withdraw inside Pengcheng and defend it. Wu put Pengcheng under siege. In spring 578, the Northern Zhou general Wang Gui () arrived with a force to lift the siege, and he, as his first step, cut off Wu's supply route (and escape path).
Xiao Mohe advised Wu to attack Wang as quick as he could to prevent the supply route from being cut off, but Wu did not follow Xiao's suggestion. Soon, the Chen forces were trapped. Wu's subordinates suggested destroying the levee near Pengcheng so that the area would flood, allowing them to escape by ships. Wu agreed, but believing that he, as the commanding general, should withdraw last, did so, sending Xiao with the cavalry first. The cavalry was therefore able to escape, but most of the foot soldiers—30,000—and Wu himself were captured by Wang on 20 March 578 and taken to the Northern Zhou capital
Chang'an.
Emperor Wu of Northern Zhou created Wu the Duke of Huaide, but Wu, angry over his capture, died soon thereafter. It appeared that because Wu Mingche was captured and not killed in action, his titles and offices were stripped by Emperor Xuan. After Emperor Xuan's death, Emperor Xuan's crown prince and successor
Chen Shubao posthumously created Wu the Marquess of Shaoling in 583 and allowed his younger son Wu Huijue () to inherit the title. (The fact that the title was not inherited by Wu Rongzhao implied that Wu Rongzhao was probably also captured by Northern Zhou forces or died without issue.) ==References==