We have a 9 hour wait from the time we arrive in Shanghai until we fly out to Singapore. Is there any way we can book our luggage in at a train station early so we can sightsee without having to carry our luggage. I was told you can purchase a train ticket to the airport and at the same time - book your luggage in and they will take it to the airport for you - and then we could sitesee and get the train to the airport later - is that possible or do we have to accompany the luggage