Yeah, but how can you send it on the train if you are not there?

And what are the fees for such a service?

I used EMS a couple of times in China, it was always reliable.

I don't doubt that EMS is reliable, but you do need an address to give them and that may be undecided. Take this scenario; you are fed up to your back teeth with all your fellow loser FT's at the state school where you are working; drunken FT, throwing tinnies all over your cabbage patch; immoral Ft's, bringing whores back from pink-roomed houses of ill repute, bellowing, shouting and vomiting outside your flat door; grumbling Ft's, all the time bending your ear about how poluted and Godless China is- you have had a bellyful; however, one day respectable private English Centre gives you a bell-"Can you start next Monday, we will sort you out with accommodation, but please stay in a hotel for a few days on arrival-we will today upon your acceptance put a thousand yuan into your account to cover your initial expenses?" So, you must do a runner, and as you do not have an address yet, you cannot use EMS, and must send your belongings by train. They will charge an amount much less than the belonging are worth is all I can say. You will get a ticket to redeem your belongings at your destination station...mingbai ma.