"Shi Sheng" is a word that has been frequently used in recent years. The so-called "prosperous time" refers to some specific stages of China's social development in history, when the country moved from chaos to great governance and maintained prosperity for a long time. In the history of China, there were only three times of prosperity, namely, the prosperity of the Western Han Dynasty, the prosperity of the Tang Dynasty and the prosperity of Kang Yong in the Qing Dynasty. These three prosperous times, on the one hand, established the basic connotation of China's traditional concept of "prosperous times", on the other hand, failed to avoid the end of "flourishing and declining", thus leaving people with endless topics and thoughts.

The prosperous period of the Western Han Dynasty: Emperor Wen of Han Dynasty, Emperor Jing of Han Dynasty, Emperor Wu of Han Dynasty, Emperor Zhao of Han Dynasty and Emperor Xuan of Han Dynasty.

The flourishing age of Kaiyuan: Emperor Taizong, Wu Zetian and Tang Xuanzong.

The prosperous times of Kang Yong: Kangxi, Yongzheng and Qianlong.