I don't have a specific number of readers, but I can tell you some of the types and characteristics of historical time-travel novels. Historical time-travel novels were a popular genre of novels, usually depicting the protagonist traveling to the past and using his wisdom and ability to change the course of history. These novels often involved politics, military, culture, and other fields. Sometimes, there were elements such as love. The following are some common historical novels: 1. Back to the Ming Dynasty as a Pirate: The protagonist uses modern knowledge to sail and trade in the ancient sea with the Ming Dynasty as the background. 2.< Lord Snow Eagle >: The main character is an excellent knight from the modern world who returns to Europe to become a lord and conquer his territory. 3 " The Rise of the Great Qin Empire ": The main character is a modern scholar who returns to the Qin Dynasty through time travel to help the Qin Dynasty achieve its goal of unifying the six countries. 4.<< Full Time Expert >>: The protagonist is a retired professional player who plays an important role in the war by traveling back to the Three Kingdoms period. These novels were all excellent works. The readers could choose works that suited them according to their preferences.