Participants
Participants for this study were selected from graduate students at Zhoukou Vocational and Technical College in China. Three separate groups were recruited for the study. The first group consisted of 300 participants who were recruited for a correlational study related to question 1. The eligibility criteria for this group were as follows: participants must be graduate students at Fudan University and willing to participate in the study. The sample size was determined based on power analysis and the expected effect size. The second group consisted of 100 participants who were recruited for question 2. The eligibility criteria for this group were the same as for the first group. Participants were randomly assigned to either an intervention group or a control group. The third group consisted of 20 participants who were recruited for question 3. The eligibility criteria for this group were the same as for the first two groups. Participants were selected using purposive sampling based on their responses to the questionnaire in question 2. All participants provided informed consent prior to participating in the study. The study was approved by the Institutional Review Board at Zhoukou Vocational and Technical College. Participants were assured of confidentiality and the right to withdraw from the study at any time without penalty.