The brick girl who appeared in the fifth episode of "Where is Dad?" The third season is Tina Cheng in Chuantian Village, Matang Miao Township, Suining County. After the college entrance examination, she stayed in the brick factory where her parents worked near the county vocational secondary school to move bricks, cook, buy food and wash clothes.

After listening to the girl's story, Lin Dajun expressed deep sympathy. Later, he asked his father Lin Yongjian to leave the girl's cell phone number and wanted to contact him later. Lin Yongjian also happily agreed. Lin Dajun's family funded a girl to finish college, and now she has graduated and has a very good job. Going to college changed her life to some extent.