I'd like to take Kowloon-shanghai train, is it bullet train? Which train should I used, how much the fare and how to buy a ticket. I'm traveling with my husband, 1 kid >140cm, 1 kid 110-140cm, 1 kid <110cm, (2 adults, 3 kids). I'd like to have 1 or 2 cabin, where can I see the train interior? Thank you.