what do you mean by check luggage? When you take the train, you have to carry your luggages by yourself. On the train, there are carrier equipped.

I MEAN CHECK LUGGAGE LIKE WE DO IN AN AIRPORT OR ON THE TRAIN FROM MAINLAND CHINA TO HONG KONG.
THANKS

Oh, so you just have to take your luggage to go through the security inspection machine. At the entrance to take the train, there will be an automatical machine, please put your luggage on it and collect it by yourself. No need to register your luggage or open it for check.