I am flying in on china eastern airlines from Canada on route to bangkok. I was told I will need to get my suitcase myself and then go to check in again on Shanghai airlines for my flight to bangkok ( even thought it was all booked through china eastern air they told me it's a different airline check in?). will this be easy to do? I have 4 hours between flights but I am worried...is the check in terminal close to the arrivals? if anyone has directions it would be much appreciated..