This thing is used to check luggage.

Luggage consignment is different from air consignment.

Consignment here refers to heavier luggage and things that are inconvenient to carry.

Take it to school by train

And those luggage tags are used to stick on your own luggage that needs to be checked by train.

When you get to school, you will organize to collect your luggage.

The identification of your luggage is the luggage tag you put on it.

If you don't want to check by train, you'd better keep your luggage tag.

Because if it is military training or moving to a dormitory, it is quite convenient to identify your luggage.