When naming the protagonist and heroine of a novel, one could consider the following aspects: 1. Likes and personality: The names of the protagonist and heroine should reflect their characteristics and preferences, such as the names of the people they like and the things they like. 2. Meaning and Symbol: The names of the protagonist and heroine can have certain meanings and symbols, such as symbolizing growth, courage, wisdom, happiness, etc. 3. Culture and tradition: The names of the protagonist and heroine can reflect certain cultures and traditions, such as using ancient vocabulary or cultural background. 4. Popularity and fashion: The names of the protagonists and heroines can reflect certain trends and fashions, such as using popular words or popular cultural elements to name them. 5. Rhythm and beauty: The names of the protagonist and heroine should have a certain rhythm and beauty. For example, they should be named with simple and easy to remember rhyme structures or beautiful words. When naming the protagonist and heroine of a novel, you can choose a meaningful and pleasant name based on the above aspects to make the novel more lively and interesting.