After I Transmigrated, I Really Became Invincible

After transmigrating, Su Yan happens upon a System, and her cultivation shoots straight to the top, making her invincible across the continent. Just as she thinks she can live a peaceful life, she gradually learns that she is descended from an Immortal Emperor. An accident during her mother's labor left her too frail, so her parents had no choice but to send her to the lower realm... The System she thought she had was also a form of help her parents had gone to great lengths to provide...