In the book 'Li' from the movie, the main characters are Li, a young artist struggling to find her voice in a bustling city, and her mentor, Mr. Chen, a reclusive painter with a mysterious past. Li’s journey is one of self-discovery, as she navigates the pressures of her family’s expectations and her own creative ambitions. Mr. Chen, on the other hand, serves as both a guide and a mirror, reflecting Li’s potential and her fears. Their relationship is complex, blending admiration, frustration, and mutual growth. The story also introduces Mei, Li’s childhood friend, who represents the life Li could have had if she’d followed a more conventional path. Together, these characters create a rich tapestry of conflict, inspiration, and transformation.