The subway that erases provincial borders

You live in one city and work in another, and the only thing standing between you and your desk is an hour long crawl through traffic, until now. Beijing's newest subway line does not stop at the city line. It keeps rolling straight into Hebei, turning what used to be a commute into something that feels more like a local errand. That changes everything, not just for the people riding it, but for the very idea of where a city ends and where a region begins. On the show: Steve, Yushan & Yushun