There is a special family in Zhangjiakou, Hei Bei province. Xia Zhang is a mom of a deaf child. Her son lost hearing due to medical malpractice. Through her persistent efforts, her son can sit in the same classroom with normal students.The deaf-mute childrens' families send their kids to Mrs. Zhang in the hope of a cure. She started teaching them at home and named it Qing Yu (Cyan Rain). This family consists of a mother and 14 children, in which the eldest is 8 years old and the youngest is 2 years old. While other children of their age are enjoying the time with their parents, they have to go to a specific class learning how to speak.