The heroine is not a traditional house-fighting heroine, but the controller of the "grey field". She is neither the embodiment of justice nor a pure avenger. She is a "businessman"-exchanging medical skills for intelligence, power, and a way to survive. The biggest counter-routine is that she never aspired to marry into a high-ranking family. Instead, she turned all her suitors into "clients" and collected consultation fees in the form of "instalments." The cool thing about the whole book is that everyone is begging her, and every time she takes action, she will take away the other party's most precious thing - either a secret or a contract of betrayal. The "prescription" she prescribes is not only a life-saving prescription, but also a rope to control people's hearts.
