Sincerity is a very important part of the character's character in a novel. It can shape the character's character and enhance the reader's emotional resonance. A sincere person would usually show their true self and resonate with the reader to establish an emotional connection. Their actions and words would be more natural and real, making the readers feel closer and more trusting. In novels, a sincere person usually had the following characteristics: 1. Honesty: They can directly express their feelings and thoughts without hiding their true self. 2. Kindness: They are friendly to others, care about the well-being of others, and are willing to pay for others. 3. Have a sense of responsibility: They are responsible for their own responsibilities and obligations, and can take on their own responsibilities and try their best to complete the task. 4. Honest and trustworthy: They keep their word and will not deceive others. A sincere person could not only make the readers feel good about him, but also build a good interpersonal relationship and lay a solid foundation for the development of the story.