Research on the mechanism and path of China's cultural industry structure upgrading in the digital intelligence era 并列题名：Research on the mechanism and path of China's cultural industry structure upgrading in the digital intelligence era Research on the mechanism and path of the manufacturing industry upgrading with "Internet Plus" Research on the mechanism and path of enterprise transformation and upgrading in the internet age 并列题名：Research on the mechanism and path of the manufacturing industry upgrading with "Internet Plus" Research on the mechanism and path of shaping the mainstream ideology of youth in the new era Research on the optimization path of China's cruise industry structure from the perspective of comprehensive tourism Research on the mechanism and mode of Beijing's agricultural cultural creative industry development Research on the mechanism and path of technological innovation supporting rural revitalization in Beijing