Chinaxiv is a preprint platform supported by the Bureau of communication of the Chinese Academy of Sciences, the construction of the documentation and information center of the Chinese Academy of Sciences, and the deposit, preservation and utilization of manuscript papers and subsequent versions for the national academic community (authors and readers, journals and academic institutions). It aims to build an autonomous, standardized, reliable, open and shared scientific research paper exchange system for scholars, and is committed to building a national preprint exchange infrastructure, Support the construction of a high-end exchange platform for national scientific research papers and scientific and technological information.