During the Kaiyuan period of Emperor Xuanzong of the Tang Dynasty, the Tang Dynasty made brilliant achievements in economic, political, cultural and other aspects, creating a "Kaiyuan era" that was strong and prosperous in Chinese history and was famous for centuries. The Tang Dynasty Entered its heyday.
The most vivid description of the prosperity of the "Kaiyuan era" is the poem "Recalling the Past" by the poet Du Fu: "Recalling the past in the heyday of Kaiyuan, there are still thousands of families in the small town. The rice is dripping with fat. The corn is white, both public and private warehouses are plentiful. There are no wolves on the roads of Kyushu, and it is auspicious for long journeys. Qiwan and Lu's carriages are running every day, and men and women are farming. "It's really a scene of peace and prosperity.