On this day 1012 years ago, on September 20, 1013 (August 13, 1013 lunar calendar), the book of "Deeds of Monarchs and Departments" ordered by Zhenzong of the Northern Song Dynasty was completed. On September 20, 1013, the book of "Deeds of Monarchs and Departments" ordered by Zhenzong of the Northern Song Dynasty was completed, and was given the name "Yuan Turtle of Shufu". Zhao Heng of Zhenzong of the Song Dynasty (968-1022), formerly known as Zhao Dechang, was the third emperor of the Northern Song Dynasty. He was the third son of Emperor Taizong of Song. Before ascending the throne, he was named King of Han, King of Xiang and King of Shou, and succeeded by the crown prince in 997. During the reign of Zhenzong of the Song Dynasty, the rule of the Northern Song Dynasty was increasingly solid, and the state management was increasingly perfect. The Northern Song Dynasty was relatively prosperous. Comments: Zhenzong of the Song Dynasty