Xu Qingyu was tortured by human traffickers to the point of mental retardation for five years while trying to save her infant daughter Zhou Tang, reducing her intelligence to that of a three-year-old and making her a laughingstock. Her husband Zhou Yan initially took good care of her, but later grew weary due to his junior fellow apprentice Lin Xu's instigation. When Zhou Yan spoke harshly to her during their daughter's sports day, it unexpectedly stimulated Xu Qingyu to regain her memory.
