Research on the development of port and shipping industry in the post-epidemic era based on gray relevance model

This paper will focus on the statistical situation of China's port shipping industry system from June 2020 to June 2021, and use the grayrelevance model to conduct an empirical analysis of the system. The results show that there is a strong correlation between the five indicators of China's port shipbuilding system after the epidemic and the three indicators of the economic and social system, and there is uncertainty about the correlation intensity of the indicators before and after the epidemic.