This was an idiom from the novel " Flowers in the Mirror." The original text was: " People in the mirror, people in the mirror." It was used to describe a person's ability to adapt and react in different environments. In the fourth chapter of " Flowers in the Mirror," this sentence was about Feng Ziying seeing the person in the mirror and the person's reflection in the mirror, which led to a series of stories and suspense. This sentence was also used to describe people with multiple personalities or identities. They would show different personalities or behaviors in different situations.