Submit to you in the seventh year

Seven years ago, Xiang Tian fell head over heels for Huo Yanchen on campus. After being rejected, she used her wealth to help Huo Yanchen out of trouble and got him to sign a dating (sugar daddy) agreement she proposed, which Huo Yanchen signed under humiliation. Later, Xiang Tian was kicked out of her family and became a reviled fake heiress, while the poor boy she had been supporting, Huo Yanchen, turned out to be the real family heir. Xiang Tian, pregnant, went into hiding and moved to another city to live, leaving no trace thereafter. Seven years later, she, now a single mother, reunites with Huo Yanchen. Xiang Tian chooses to avoid him out of guilt and fear of losing her child, while Huo Yanchen presses on relentlessly, leaving her no way to escape.

Synopsis from DramaGo.