Influenced by Marx's A Brief History of Social Development, the "Yu Dynasty" which started from the Yellow Emperor or earlier has not been recognized.

In fact, pre-Qin books, including Shangshu, Guoyu, Warring States Policy and Three Biographies of the Spring and Autumn Period, all have Yu Xia's view of Shang and Zhou Dynasties, and historical records also have this view.

Just because there are biographies of five emperors in Historical Records, we can't say that Yu Dynasty doesn't exist, although the name Yu Dynasty does have considerable problems.

Yu Dynasty, also known as Yu Shun Dynasty, and the Tang Dynasty, also known as Tang Yu? .

In the first issue of Hebei Academic in 2002, Comrade Wang Shumin's academic paper "There was a Yu before Xia, Shang and Zhou Dynasties" was published.

"Yu Chao" means "Yu Shun" in the history books, referring to Yao Chonghua in Shun Di.

Yao Zhonghua, whose word is Jade, is a tribe of the clan commune.

Legend has it that Shun's eyes are binocular, so the word "heavy" and "Hua" may refer to China people of the Chinese nation.

In Zuo Zhuan and Guoyu, there are countless sentences connected by Yu, Xia, Shang and Thursday, most of which are relayed from people's dialogues in the Spring and Autumn Period. Just because the dialogues between people in the Spring and Autumn Period recorded in these two books were written in the Warring States period, it cannot be concluded that they are all false theories of people in the Warring States period.

Moreover, "three generations" is a concept that changes with the times. In the Spring and Autumn Period, people already had the fact that the Western Zhou Dynasty was dead and the Eastern Zhou Dynasty still existed. When it is necessary to distinguish the death or continuation of Zhou from different angles, two different concepts of "three generations" are used respectively: Zhou and Shang.