Why did the horrible nursery rhyme Rong wake up?

Rong woke up in the horrible nursery rhyme of "Star Detective" because she was framed and killed the dean, which she couldn't accept. Rong has been under severe psychological pressure because she always thinks she is a kind person, but in this incident, she was accused of committing a felony, which caused a serious conflict between personality and self-cognition. This kind of conflict finally woke her up and made her wonder if her kindness and sense of justice were true. Rong's awakening has led to conflicts and contradictions between her and others, which is also the main driving force for the development of horror nursery rhymes.