Introduction: Youth is beautiful. Here, Su Yunya, a girl with low self-esteem from a poor family, met Yang Haoyu, an unruly young man from a wealthy family. A twist of fate made her know how much the seemingly unruly young man longed for warmth in his heart; she made him know the fragility of this optimistic girl behind the scenes. A fateful accident made them know the teacher's love for students; a happy competition made them know the unity among classmates; a separation made them understand the true meaning of love, allowing them to grow and become strong.