What is a three-hour economic circle?

It is mainly to build a huge economic business circle with some big cities as the center and expressway, high-speed rail and other transportation carriers as the hub. In this economic business circle, expressway, high-speed rail and other transportation carriers bring us not only the speed of traffic, but also the prosperity of the economy and the rapid development of the city. "N-hour economic circle" is a new economic concept brought by the high-speed rail era. The high efficiency and comfort of the high-speed rail drive the rapid flow of people, which drives the great flow of logistics, information flow and capital flow, thus driving the development of regional economy.

For example: Cheng Yu 'an three-hour economic circle.