Hi moondog, all our flights are booked. We are going to take a chance and hope that with 4 hours between flights in HK we will hope for the best. As we are visiting Beijing on the 144 hour visa we have 5 full days then we travel to Da Nang on paper our plan works! Hopefully it will all work out, if it wasn`t for you guys I would have booked the flight with only 1 hr 35 mins connection! so for that I am so very grateful.