Major or hot issues that need to be answered urgently in real society. Most of the liberal arts topics come from this; Theoretical or practical problems encountered in the work practice of this region, this department and this industry. Questioning the existing viewpoints, materials and research methods can inspire people to rethink the problem, although they have not put forward their own new viewpoints.

The research direction of a thesis generally refers to the research direction of topics that students need to be clear during their school days or that relevant researchers need to declare during the process of writing a thesis.