As for the purpose of these words, Su Zhiruan was very clear.
Having traveled through several worlds, her mind had already matured. Her methods of viewing and thinking about situations were different from those of the naive children still in school.
She thought more long-term and saw more aspects of things. She wanted to caution these children not to do pointless things that could hurt others' hearts and families.
To others, her tone sounded more like a mother's admonition. They were puzzled, and although they all attended the same school and were even of the same age, there were hardly any who could speak as Su Zhiruan did—practically none.
Su Zhiruan knew that most of these children were like weathercocks. Some didn't actually want to follow the crowd and bully her; most just wanted to blend into the group so they wouldn't become targets like her, and to fish in troubled waters by bullying the weak with pretense and affectation.