Evil King and the Strong Useless Miss

A well-trained mercenary turned into a young lady of the martial arts family overnight. What kind of wonderful experience will she have?
She is a well-trained mercenary who can complete the task perfectly and never get hurt every time, but this time She was knocked out and thrown into the sea because her friends betrayed her. 
When she woke up, she found herself lying in bed miraculously, with her parents beside her. It turned out that her soul came into this world of martial arts through time and space. With her once outstanding physical qualities and professional skills, her martial arts practice progressed rapidly.
With super martial arts, in addition to protecting her favorite parents and brother, she also has to defeat those who try to destroy her. The difficulty is self-evident.
☆About the Author☆
Shui Zhi Jian, an excellent online novelist, her novels have delicate emotional descriptions and moving storylines, which are welcomed by most readers.