Zheng Jia has a big brother, who studies in school. This family has heavy financial burden.
Zheng Jia is healthy, but a little short than same age students.
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 home trying to earn more money to support this family and his monthly income 3000 Yuan.