From Xi'an to Beijing? Train, T56, with a computer case can be checked in?

Of course you can, go to the Xi'an train consignment office, with the train ticket for consignment. When you get to Beijing station, take the ticket and go to the consignment office to pick it up, the difference will not be more than half an hour. If you are in a hurry, you can go to the train station one day in advance for consignment, and you can take it out of the station. The computer is best for the original packaging, shockproof effect is good.