Emperor Wen of Sui - Early Kaihuang Era

Early Kaihuang Era

Emperor Wen abolished Northern Zhou's governmental organization of six departments, instead establishing five main bureaus—executive bureau (Shangshu Sheng (尚書省)), examination bureau (Menxia Sheng (門下省)), legislative bureau (Neishǐ Sheng (內史省)), archival bureau (Mishu Sheng (秘書省)), and eunuch bureau (Neishì Sheng (內侍省—note different tone and character versus 'legislative bureau')), with two additional independent agencies, 11 other independent departments, and 12 military commands. He posthumously honored his father Yang Zhong and mother Lady Lu as emperor and empress. He created his wife Duchess Dugu empress and their oldest son Yang Yong crown prince; he created his brothers and his other sons imperial princes. He initially created Northern Zhou's Emperor Jing the Duke of Jie, but soon slaughtered all grandsons of Yuwen Tai, and eventually put the Duke of Jie to death as well. He entrusted most of the important governmental matters to his officials Gao Jiong, Yang Su, and Su Wei. Agreeing with some officials' assertions that Northern Zhou fell because its imperial princes lacked power to protect the central government, he sent his sons out to key provinces with broad powers. He further commissioned the official Pei Zheng (裴政) to carry out a project of simplifying the penal code and decrease the penalty from the harsh laws—a reform that was later largely accepted by the succeeding dynasties.

Emperor Wen did not maintain as submissive a relationship with Tujue, which brought resentment from Tujue's Shabolüe Khan Ashina Shetu, and Ashina Shetu's wife, Northern Zhou's Princess Qianjin (Yuwen Zhao's daughter) particularly hated Emperor Wen for destroying Northern Zhou. Ashina Shetu therefore carried out a series of border attacks against Sui, allied with Gao Baoning (高寶寧), the former Northern Qi general who was still holding Ying Province (營州, roughly modern Zhaoyang, Liaoning). In response, Emperor Wen, under advice from the general Zhangsun Sheng (長孫晟), Emperor Wen carried out the strategy of placating Ashina Shetu's subordinate khans—his uncle Datou Khan Ashina Dianjue (阿史那玷厥), cousin Abo Khan Ashina Daxianbian (阿史那大暹便), and brother Ashina Chuluohou (阿史那處羅侯) – to create dissension within Tujue, and gradually, the strategy worked, causing Tujue to be unable to take unified actions against Sui.

In 581, Emperor Wen commissioned a major attack on Chen, and while it was initially successful, Emperor Wen withdrew the attack in spring 582 after hearing that Emperor Xuan of Chen had died and believing it wrongful to attack a state whose emperor had just died.

In 582, believing that Chang'an was too small of a city, Emperor Wen built a new capital nearby, which he named Daxing, and in spring 583 he moved the capital to Daxing. (From that point forward, Daxing and Chang'an became interchangeable names, although by the time of succeeding Tang Dynasty, the new capital was known again just as Chang'an.)

Also in 582, Emperor Wen, thankful for the refusal by the vassal Emperor Ming of Western Liang to support Yuchi Jiong in 580, withdrew his forces from Western Liang's capital Jiangling, permitting Western Liang a degree of self-governance. He also took Emperor Ming's daughter as the wife and princess to his son, Yang Guang the Prince of Jin. (After Emperor Ming's death in 585 and succession by his son Emperor Jing of Western Liang, however, Emperor Wen reestablished the post of commandant of Jiangling and again put Western Liang territory under military control.)

By spring 583, Tujue's internal dissension had become serious enough that Emperor Wen felt comfortable enough to commission his brother Yang Shuang (楊爽) the Prince of Wei to command a major attack against Ashina Shetu. Yang Shuang achieved a great victory, and part of his army, commanded by the general Yin Shou (陰壽), defeated Gao, forcing Gao to try to flee to the Qidan, but on the way, Gao was killed by his own subordinates, ending the very last bit of Northern Qi resistance. After the defeat, the various subordinate khans further engaged in battles among themselves and against Ashina Shetu, with Sui watching by, refusing to give aid to any side. By 584, Ashina Shetu submitted to Sui, and even the resentful Princess Qianjin referred to Emperor Wen as "father." He created her the Princess Dayi.

In summer 584, believing that the Wei River, on account of its sandbars and treacherous waters, was becoming too difficult of a route for food transport to Daxing, commissioned the official Yuwen Kai (宇文愷) to construct a canal between Daxing and Tong Pass, parallel to the Wei River, named the Guangtong Canal (廣通渠), greatly easing the transport of food and other supplies to the capital region Guanzhong. Nevertheless, on account of a famine in Guanzhong in fall 584, Emperor Wen briefly took up residence in Luoyang.

In 586, the officials Liang Shiyan (梁士彥) the Duke of Cheng, Yuwen Xin (宇文忻) the Duke of Qi, and Liu Fang the Duke of Shu—all three of whom were friends of Emperor Wen but all of whom believed that they had been slighted by Emperor Wen—were accused of plotting rebellion, and all three were executed.

In spring 587, continuing his canal-building regime, Emperor Wen built the Shanyang Canal (山陽瀆) between the Yangtze River and the Huai River to improve the transport of material between those two rivers.

In fall 587, Emperor Wen summoned Western Liang's Emperor Jing to Chang'an to meet him. Emperor Jing complied with the direction. While Emperor Jing was away, however, Emperor Wen, believing that Jiangling would not be guarded well, sent his general Cui Hongdu (崔弘度) to Jiangling. Emperor Jing's uncle Xiao Yan (蕭巖) the Prince of Anping and Xiao Huan (蕭瓛) 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 (陳慧紀), 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 (賀若弼) crossed the Yangtze at Jingkou (京口, in modern Zhenjiang, Jiangsu), and the Sui general Han Qinhu (韓擒虎) 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 (蔣州).