Emotions are a source of information (Schwarz and Clore, 1996) that help you understand what is going on around you. Negative emotions, in particular, can help you recognize threats (Zein, Wyatt and Grezes, 2015) and feel prepared to positively handle potential dangers (Biswas-Diener and Kashdan, 2014).
While how people express their negative emotions are different from culture to culture. Different from Western or individualism, in Eastern or collectivist culture, where see harmonious and inclusive as their main value system, people seldom show their negative emotions or say, ugly feelings, in order to maintain a minimum level of effective social functioning, such social environment serve as triggers to depressive episodes for vulnerable individuals.
Furthermore, mental health crisis is sweeping the globe, especially during the COVID-19 pandemic, people are experiencing more challenges than usual. Thus, it is imperative to conceive a new negative emotion expression system.