ChinaXiv is a preprint service launched in 2016 by the Chinese Academy of Sciences. During past 6 years, ChinaXiv popularized the concept of preprint communication in China and built a preprint platform that operates according to international standards. For the future, ChinaXiv has positioned itself as an open scholarly communication infrastructure for scientists, helping research institutions to build an open scientific infrastructure in their fields and helping scientific journals to transform from the traditional closed model to an open and transparent model.