During the 285 years from the fifth year of Tang Gaozu Wude (622) to Aidi Dingmaoke (907), the imperial examination was held almost once a year, and about 270 people won the first prize. The number of people who can take the exam in ancient books such as Entrance Examination for Universities and Talking about Hui Nationality is 140. In the history of imperial examinations in China, there were millions of people and more than 100,000 scholars, but as the peak of this huge intellectual group, the number one scholar Lang was only a handful. According to textual research, from the first scholar in Wude five years (622), a native of Gucheng County, Hebei Province, to the last scholar in Guangxu thirty years (1904), during this period 1283, the number of scientific research lists was 745, resulting in * *. China ancient society, from ordinary people to officials and dignitaries, firmly believed that "there is Yan Ruyu in the book, there are thousands of bells in the book, and there is a golden room in the book".