What is the relationship between Song Dajiang, Zhu Xiaofang and Daniel in the TV series "Educated Youth Family"

Introduction of main roles: 1. Song Dajiang: Actor Ren Chengwei Song Dajiang experienced brilliant success through hard struggle. The only son's painful past, pretending to be bankrupt, his life is not perfect. Objectively, he was not a good husband and father, but later, Song Dajiang changed. After waking up, he tried to pay for his own life. 2. Lin: The actor Yueqing was originally a simple and kind woman. Faced with a series of problems such as life, family, marriage and children, she became strong and forbearing, full of positive energy, and because of this personality, she finally became a winner in life. 3. Actor Yang Xiaofang, a simple and kind rural girl, lost her son, her beloved married someone else, and she was still seriously ill. In the face of this series of blows, Zhu Xiaofang endured humiliation and never complained about the bumpy fate. She always thinks of others and hopes that the people she loves will be happy. 4. Maggie Cheung: Actress He Haoyang Maggie Cheung, an educated youth, is aggressive by nature. She went abroad to develop in Canada, running for further study in Canada, and then returned to China to settle down and get together with her grandson.