His Son, Her Crown

To escape her mother's forced marriage scheme, Ji Tiantian leaves home after an unexpected pregnancy with Jiang Mubai. Five years later, Jiang discovers their child and pursues her. Jealous rival Yu Zhiyin sabotages Tiantian repeatedly. In a crisis, Jiang saves Tiantian and their son — just as she uncovers she is the true heiress of the Yu family, switched at birth by her "mother".