Research on the development pathways and countermeasures of urban green travel Research on the development and countermeasures of China's digital trade 并列题名：Study on the development obstacles and countermeasures of yachting tourism in China Study on the development obstacles and countermeasures of yachting tourism in China research on the development path of Zhongguancun in the new era Research on the path and countermeasures of RMB internationalization Research on the influence mechanism and countermeasures of urbanization on China's agricultural development research on the development of China's diverse public opinion field research on the development strategies based on patent roadmap Research on the development measurement of green mining industry