Publishing problem-solving articles belongs to teaching and research papers. Teaching and research papers refer to research problems and practical experience in the field of education and teaching. Through systematic research and analysis, new theoretical viewpoints, methods and achievements are put forward to promote the reform of education and teaching and improve the quality of education and teaching. Problem-solving articles are based on educational and teaching practice, and systematically analyze and demonstrate a specific teaching problem or difficulty, so they can be classified as teaching and research papers.