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We have encountered problem like this, when we
carry luggage in one hand and ticket in another
at the airport , it is rather difficult to go
to the toilet in that the ticket can be put nowhere.
We are afraid the ticket will lost or broken this
design , therefore, aims to ingeniously solve the
problem with the idea of opening a hole in the flight
can be conveniently hung on the collar
or other places .
Dalian Minzu University