I think the greatest invention in the world last year was Chat GPT, because in university, it was difficult for us to have too much time to directly communicate with teachers. We mainly relied on self-learning to learn. Chat GPT is a good assistant to cultivate self-learning ability, and we can actively ask questions and obtain accurate answers. In practice, its database and knowledge base cover almost all disciplines, which is very convenient for academic research and learning, Greatly improved efficiency.