Positive example: During the Cultural Revolution, some senior cadres were hit. After 1977, they put aside their differences for the future of the motherland and started a new era of building socialism in China.
Negative example: a classmate who is always advanced at ordinary times, his grades dropped a little after the mid-term exam, so he was bitter and always felt as if he had done something wrong and was depressed. He always feels that teachers and classmates are laughing at himself behind his back, and as a result, his final exam results have dropped greatly.