One of the not-so-secret secrets about China is how great the train system is. Especially when compared to air travel (here's looking at you, Shenzhen airport), the train system is reliable, clean and inexpensive. And the Harmony line is making it extremely fast as well. Combine that with the convenience of showing up 15 minutes before departure at a downtown terminal and we think you'll agree: the train is the best way to travel domestically.
That said, China Rail workers are not exactly known for their command of the English language. So to take advantage of the rail system you really need to know mandarin. Which is where this podcast comes in. So listen up and then practice, practice, practice with weekend trips. And with all of the money you save on air travel, buy a subscription
and accelerate your learning even more.