The study looked at how infrastructure investment affects economic growth in different regions of China. By analyzing data from 29 provinces, researchers found that investing in infrastructure positively impacts economic growth. The western region benefited the most, with a higher output elasticity compared to the rest of the country. The study suggests that more attention and investment should be directed towards infrastructure in the central and western regions to support their growth. Additionally, focusing on technology and improving marketing strategies in the western region can further boost economic development.