Eunuch novels usually depicted a eunuch who traveled back to the Ming Dynasty, the Wanli period, and used his wisdom and courage to gradually grasp power and change history in this mysterious era filled with power struggles. The following are some of the elements that might be involved: 1. Time travel to the Wanli period of the Ming Dynasty: A eunuch suddenly travels to an unfamiliar era and faces various difficulties in adapting. 2. Grasp power: Eunuchs often use their special status and methods to gradually grasp power and become important figures in the court. 3. Historical background: The Wanli period of the Ming Dynasty was a period of great historical significance. 4. Relationship with other figures: Eunuchs often establish special relationships with other figures, including emperors, officials, eunuchs, and maids. 5. Struggles and conflicts: In this era, political struggles were very intense. There were often contradictions and conflicts between eunuchs and other figures. 6. Self-growth: Eunuchs learn, grow, and improve constantly in the process of grasping power, and gradually become capable and courageous leaders. These are some of the possible elements involved. Of course, the specific storyline will vary according to the author's setting.