This book reviews history, summarizes practice, and looks forward to the future. It tries to scan the general trend of global opening-up, weighs the progress of global opening-up, analyzes the difficulties of opening-up development, and proposes countermeasures for opening-up and sharing. , forming a benign self-fulfilling prophecy. The World Openness Index is the core achievement of this report and also the main innovation. The measurement range of the index is divided into two dimensions of opening policy and opening results, with a total of 5 sub-indicators and 29 specific indicators, covering 129 economies from 2008 to 2019, including cross-border economic, social and cultural fields. open.