Emperor Wendi of the Sui Dynasty unified the north and the south, ending nearly 300 years of division. The reunification of the North and the South has eliminated the obstacles to economic exchanges between the North and the South and promoted the economic development between the North and the South. Emperor Wendi of Sui Dynasty also established the system of three provinces and six departments, which was used until the end of Qing Dynasty, and many dynasties in the middle perfected this system. This system not only stabilizes the power of the rulers, but also improves the work efficiency.
Everyone should know that the imperial examination system was founded during the reign of Emperor Wen of Sui Dynasty. The system used before was the ninth grade positive system. This system has a very bad drawback, that is, the selected talents are all children of rich families, and those with talents but poor families will be wiped out by half. This system is not only unfair to the talents of poor families, but also makes the country lose a lot of talents. After discovering this shortcoming, Emperor Wendi of Sui Dynasty founded the imperial examination system.
The emergence of the imperial examination system enabled the Sui Dynasty to acquire a lot of talents, so it developed so well later. It took Emperor Wendi of Sui Dynasty a short time to reach the economic peak of Sui Dynasty. Part of the reason why the Tang Dynasty is famous in history is that the Sui Dynasty laid the foundation for the prosperity of the Tang Dynasty. After Li Shimin came to power, he made full use of the powerful economic foundation left by the Sui Dynasty to make the Tang Dynasty prosperous.