Female agent time-travel novels usually involved time-travel, agent missions, family history, political struggles, and other elements. Some of the more common novels about female agents included " Secret Service Concubine,"" Secret Service Madam,"" Secret Service Pretty Woman," and so on. The protagonist of these novels was usually a female agent who traveled to ancient times or the future to use her intelligence and skills to complete various missions to protect herself and her family. At the same time, she also showed extraordinary wisdom and courage. The plot of the female agent's time-travel novel was complicated and the characters were vivid and loved by readers.