The questionnaire of the Chinese version of DASS-21 comprises 21 items that assess three negative emotional experiences, namely depression, anxiety, and stress (Jiang et al., 2021). The depression factor consists of seven items (3, 5, 10, 13, 16, 17, 21), which are related to pathological dysthymia, low self-esteem, and low level of positive emotions. The anxiety factor comprises seven items (2, 4, 7, 9, 15, 19, 20), that related to the somatic and subjective experience of anxiety arousal. The stress factor includes seven items (1, 6, 8, 11, 12, 14, 18), that relate to negative emotionally. A 4-point score System was used (0=completely disagree, 1=partially agree, 2=mostly agree, 3=completely agree). Higher scores indicate stronger negative emotional experiences (Gomez et al., 2014; Oei et al., 2013).