Le Tong knows that Zhang Yuxin is her mother.

I see. In the TV series Because I Met You, Le Tong's mother is Zhang Yuxin. Because the baby was hers and Liu's, after the baby was born, Zhang Yuxin asked her mother to send her to the welfare home. In later stories, Le Tong knew that Zhang Yuxin was her mother. "Because I met you" tells the inspirational story of how Zhang, a girl who lives in a wonton shop but has amazing embroidery talent and mysterious life experience, retaliates in the fashion circle.