Zheng Jia has a big brother, who studies in school. This family has heavy financial burden.
There?re seven people in the family, but this family is lack of working person. His grandpa has kidney stone, who needs long-time medication and remove stones. His mother takes part time job and earns 1 thousand a month. Zheng Jia?s father works away from???
Zheng Jia is healthy, but a little short than same age students.