If you want to read academic books, read "Yongzheng Biography" by Mr. Feng Erkang. If you want to understand historical knowledge, you can read "Yongzheng Dynasty".
In addition, if you want to know more about Yongzheng, you can read "The Chronicles of the Ancestors of the Qing Dynasty" in the "Manuscript of the History of the Qing Dynasty", as well as "Records of the Ancestors of the Qing Dynasty", "Registration of the Daily Life of Yongzheng Dynasty", and "Yongzheng Dynasty Daily Record" "Zhu Pi Memorial" and other ancient books and documents.
This way you can compare and identify errors and deficiencies in the novel!