Three-year-old Wen Hengshu hated rain very much because he couldn't go out to play. When he was five years old, a neighbor moved in with an older brother who always had a cold face. Wen Hengshu didn't understand why. He only knew that the rainbow after the rain could make his brother smile. Later, Wen Hengshu looked forward to rain every day.
Ten years old, twenty years old... Until the age of twenty-five, Wen Hengshu never mentioned his neighbor brother.
Concept: The author has liked people from elementary school to college