Movies with Space-Travel Mood

Upon waking up, she finds herself reincarnated as the most lovesick woman of ancient China. Deserted by her husband, the woman never complains. But that's not her style! When she saves the crown prince, he instantly falls for her...

They flash married, each harboring their secret motives. He doesn't know that she is the mysterious doctor he has been looking for to save his brother's life, and she initially marries him with a mission to assassinate him. Now, she must decide how to reconcile her love with her original deadly intentions...