According to statistics, there are more than hundreds of titles in the history of China. Liang Qichao's statistics are 316; There are more than 500 kinds of statistics in China Chronology published by Shanghai People's Publishing House.

Before Emperor Wu of the Han Dynasty, the chronology of China was only a few years. Historians take Wang as the chronology and Lu Yin as the chronology. Since King Huiwen of Qin began to change the Yuan Dynasty, that is, the fourteenth year changed to the first year, because of the activities of the five countries. Sometimes, it is wrong to call the former Yuan and the later Yuan of Emperor Wen of Han Dynasty the earliest titles of China. Moreover, this is only an improvement on the chronology, and it does not have a real title.

The monarch with the shortest reign after the Yuan Dynasty reform: King Qin Xiaowen (3 days)

The longest reigning monarch after the reform: Zhou Nanwang (59 years old)

The emperor with the shortest reign after the reform in Yuan Dynasty: Jin Wanyan Cheng Lin (less than 1 day)

Emperor Kangxi of Qing Dynasty (1662— 1722) used the title for the longest time after the reform of Yuan Dynasty.

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