The wheel of history is gradually moving forward, and China has a history of more than 5,000 years. From the time when King Qin won the throne and became emperor in 221 BC until the abdication of the "last emperor" Puyi in 1912, the feudal society of more than two thousand years saw dynasties change and vicissitudes of life, but the feudal monarchy never ceased. In the long history of China's feudal society, there have been a total of 495 emperors (including those who were granted the title after their death). They have always been the supreme ruler of the country and are the symbol and representative of autocratic centralized rule.