Hypothesis 5: Green finance and digital inclusive finance jointly and significantly promote the green transformation of manufacturing in neighboring provinces, with spatial spillover effects

Logical explanation: Green finance and digital inclusive finance not only impact the green transformation within their own regions but may also influence neighboring areas through their interaction. Spatially, the two can jointly drive the green transformation of manufacturing both within and beyond regional boundaries. Digital inclusive finance enhances the effectiveness of green finance by lowering financing barriers, providing convenient services, and improving information transparency, thereby amplifying the spatial spillover effect of green finance. Meanwhile, green finance offers a capital guidance mechanism for digital inclusive finance. Together, they create stronger spatial spillover effects. Empirical test: Use the Spatial Durbin Model (SDM) and include the interaction term between green finance and digital inclusive finance (i.e., their spatial interaction effect) to analyze how their joint action promotes the green transformation of manufacturing in neighboring provinces.