China News Service, Shanghai , March 11 (Yang Xuan and Gao Zhimiao) As a national innovative urban area and a national demonstration base for innovation and entrepreneurship, Yangpu District is one of the areas with the highest concentration of innovation in Shanghai . Yangpu District focuses on source innovation , vigorously promotes the deep integration and overall transformation of the digital economy and the real economy , and builds a digital economy landmark of "One Belt , One District , One Circle ". " Changyang Show Belt " Online New Economic Ecological Park: Breaking Ground On January 4, 2021, Yangpu…