Guo, D.; Xu, M., and Li, Y., 2020. An empirical study on the CPI interaction in the Yangtze River Delta economic zone. In: Gong, D.; Zhang, M., and Liu, R. (eds.), Advances in Coastal Research: Engineering, Industry, Economy, and Sustainable Development. Journal of Coastal Research, Special Issue No. 106, pp. 281–284. Coconut Creek (Florida), ISSN 0749-0208.

Accurate identification of the source and transmission mechanism of price fluctuation in an economic zone is not only conducive to maintaining price stability and promoting the healthy development of the regional economy, but also its interaction can reflect the degree of integration of economic development among the main bodies in the region. However, few studies have explored the comprehensive price interaction in the integrated economic zone. Therefore, this paper chose the consumer price index (CPI) data of each province in the Yangtze River Delta economic zone to empirically analyze the CPI interaction cross the economic zone. The results showed that CPI fluctuation in Shanghai has a greater influence on CPI fluctuation in Jiangsu and Zhejiang. Shanghai and Jiangsu are each other's Granger causality, and Jiangsu and Zhejiang are each other's Granger causality. The results indicated that Shanghai and Jiangsu have highly integrated industrial and market structures, whereas Zhejiang has a relatively independent industrial and market structure.