My name is Wu Cheng, a high school student in Tiangu Township. My father is a doctor in the village health center. Last year, my stepmother gave birth to a baby for him. The three of them have changed rapidly... My biological mother went to the city to work hard after divorced her father a few years ago, and married a businessman two years ago.My mother and I often chatted in videos and promised me to take me to her house after I went to college.