Sui Dynasty

The Sui Dynasty was a short-lived but pivotal Chinese dynasty that reunified the country after nearly four centuries of division, laying the institutional foundations on which the succeeding Tang dynasty would build a golden age.

It was founded in 581 CE by Yang Jian, a powerful northern general and aristocrat who seized the throne of the Northern Zhou and proclaimed himself Emperor Wen of Sui. In 589 his armies conquered the southern Chen dynasty, reuniting northern and southern China under a single ruler for the first time since the fall of the Han and the end of the long period of division known as the Northern and Southern Dynasties. Emperor Wen proved an able and frugal ruler who rebuilt a strong centralised state, reforming the administration, reviving and systematising the bureaucracy, standardising coinage and the legal code, reorganising the tax and land systems along the 'equal-field' model, and re-establishing institutions that would shape imperial China for centuries, including the precursors of the civil service examinations. The Sui undertook enormous public works using massive corvée labour, the most famous and enduring being the construction of the Grand Canal, which linked the rice-rich south with the political centres of the north and became a vital artery of Chinese economic life for over a thousand years. The dynasty's downfall came under Wen's son, Emperor Yang, whose reign, though marked by grand ambitions and continued construction, became notorious for its extravagance and the staggering human and financial cost of his projects and military campaigns. His repeated and disastrous invasions of the kingdom of Goguryeo in Korea ended in catastrophic failure and drained the empire's resources, while the burdens of forced labour and heavy taxation provoked widespread rebellion. Amid mounting revolts, Emperor Yang was assassinated in 618, and the dynasty collapsed. One of the rebel generals, Li Yuan, founded the Tang dynasty, which inherited and perfected the Sui's centralising institutions and presided over one of the most brilliant eras in Chinese history.

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