Why is jing mei to grt away with making a lot of mistakes on the piano?

Jing-mei is allowed to make mistakes on the piano because her mother has high expectations for her, which creates pressure rather than encouragement. Her struggles represent her journey of self-discovery and the conflict between parental expectations and personal desire. Additionally, her mistakes highlight the theme of individuality and the importance of finding one's own path in music and life, rather than simply conforming to external standards. Ultimately, these errors serve as a catalyst for her growth and understanding of her own identity.