Emperor Wen, believing that Jiangling would not be guarded well, sent his general Cui Hongdu () to Jiangling. Emperor Jing's uncle Xiao Yan () the Prince of Anping and Xiao Huan () the Prince of Yixing instead believed that Cui was intending to attack the city, and they took the populace of the city and surrendered to the Chen general Chen Huiji (), the cousin to Chen's emperor Chen Shubao. In response, Emperor Wen abolished Western Liang, directly seizing its territory, while creating Emperor Jing the Duke of Ju. Emperor Wen, who had been planning to conquer Chen for years, now further enhanced his planning in earnest. In spring 588, Emperor Wen publicly announced a campaign against Chen, commanded by Yang Guang, another of his sons Yang Jun the Prince of Qin, and Yang Su, with Yang Guang in overall command. Gao Jiong served as Yang Guang's assistant. In spring 589, the Sui general Heruo Bi () crossed the Yangtze at Jingkou (京口, in modern Zhenjiang, Jiangsu), and the Sui general Han Qinhu () crossed the Yangtze at Caishi (采石, in modern Ma'anshan, Anhui). Meanwhile, Yang Su was advancing from the west down the Yangtze, and Yang Jun was stationed in the middle Yangtze region, cutting off any Chen forces that might have been able to come to the aid of Chen's capital Jiankang. Heruo soon defeated and captured the Chen general Xiao Mohe, who was making a final attempt to repel Heruo and Han's forces from Jiankang, and Jiankang fell immediately after. Chen Shubao was captured but not harmed. Rather, he and his clan members were transported to Chang'an, where Emperor Wen treated them as honored guests. Some Chen generals briefly resisted, but soon the Sui had control. The Southern and Northern Dynasties period was over, and Sui had united China. Much as how he had torn down Yecheng after Yuchi defeat, Emperor Wen tore down Jiankang, establishing only a minor garrison at the nearby Shitou as Jiang Province (). Late Kaihuang era In 590, apparently jealous of the talent of the official Li Delin, who had been key in his takeover of power as regent and who had contributed to the strategies in conquering Chen, Emperor Wen, believing in several false accusations against Li, removed Li from his office and made him a provincial governor. Li would not return to the central government for the rest of his