Good harem novels usually had the following characteristics: 1. Multi-angle love: In harem novels, there are usually many female protagonists who have a love relationship. Sometimes it's one-on-one, sometimes it's many-on-many. 2. Rebirth: Harem novels often involved transmigration and rebirth. The master guild would transmigrate to a different era or space to adapt to society, and at the same time, they would encounter new characters and stories. Battle strategy: In the harem, the protagonist often faces various battles and challenges, and needs to use various strategies and skills to survive and reproduce. 4. Palace life: The palace life in the harem usually involved various court etiquette, political struggles, and struggles between concubines. 5. Happy Ending: Most of the harem novels will have a happy ending. The master guild will successfully reproduce and establish a strong harem force. At the same time, they will be able to get along happily with their original partners. These are some of the common characteristics of harem novels. Of course, different authors and works will have different styles and characteristics. The readers can choose works that suit them according to their own preferences.