Paper is a Chinese character, and pinyin is lùnwén, a word commonly used in classical literature, which means to speak or exchange ideas. At present, papers are often used to refer to articles that carry out research in various academic fields and describe academic research results, which are referred to as papers for short. It is not only a means to discuss problems in academic research, but also a tool to describe academic research results in academic exchanges. Including academic papers, graduation papers, dissertations, scientific papers and achievements.