I am taking air asia to Hangzhou and thought of spending 3 nights in Hangzhou before going to Shanghai. I understand I can take a bus or train to Shanghai. However, I heard the Shanghai train station is very packed and even if i buy a seated train, the seat may be occupied by others (even though is not his/her seat). Since my husband is a disabled and I have a young kid traveling with me, would it be easier if I take an air asia bus to hangzhou i.e. I have to travel back to the airport to get a bus to Shanghai? Any suggestions what's the best way to travel to Shanghai from Hangzhou with convenience?