hi i will go to shenzhen in julyand wil stay for 2 days and from shenzhen i have to go to hongkong international airport.can you tell me if there is any coach which goes directly to hnkng international airport?do i need a visa to enter honkng if i travel by coach.and is there any train or something?if i need a visa there can i get it in shenzhen and how much the fare for the visa and the coach ?thank you guys.plz help.