This question was rather vague because he did not find any novel that contained the plot of a rich young master and young mistress being kidnapped. After being rescued, the young mistress jumped off the building herself. However, this situation was not rare in real life. Sometimes people are misunderstood, bullied, or used. They may feel hopeless and lonely, which eventually leads to psychological problems. In this case, some novels might use a plot similar to the kidnapping of a rich young master and young mistress to highlight the protagonist's psychological struggle and pain to resonate with the readers. This kind of novel may explore topics such as human nature, family, wealth and power, which may bring profound thoughts and enlightenment to readers.