Traveling back in time as a substitute princess who was sent to death by her aunt, Gu Changning awakened the power of "heart resonance" - not only can she hear everyone's true thoughts, but when the other person is emotional, she can turn their thoughts into a "real barrage" and project it on the light screen behind the other person, which only she can see. She used this ability to investigate corruption in the palace, catch traitors, and get rid of people who wanted to kill her one after another. However, she unexpectedly discovered that King Jingbei was a wife-slave lover. Her only thought was "Why didn't she come and touch my head today?"
