“…However, owing to the differences in the level of digital infrastructure among cities, the DE may generate new digital inequality and the "digital divide" phenomenon in the early stage of development, and lead to the "siphon effect" because of the relative lack of new digital infrastructure such as mobile base stations, Internet of Things, big data centers, and cloud platforms. In peripheral cities, given the relative backwardness of the soft environment such as the institutional environment and policy preferences, the development of DE may accelerate the flow of all kinds of factors from the peripheral cities to the central city, thus generating the "siphon effect" phenomenon, leading to the "Matthew effect" (i.e., "the weaker is weaker, the stronger is stronger"), further distorting the allocation of factors, and impeding the enhancement of the performance of urban EWP (Cui et al, 2023). However, with the rising level of DE development in cities, DE development can effectively reduce the cost of searching, trading, matching, and copying by alleviating information asymmetry (Xue and Li, 2022), thus reducing the transaction barriers, breaking the market boundary, and expanding the scope of the market, which is conducive to the flow of factors in a larger space, and optimizing the distortion of factor allocation (Qu et al, 2023).…”