I would like to visit both Hong Kong and Beijing and am wondering if I qualify for the 72 hour visa in Beijing. My concern is my outgoing flight from Los Angeles to Hong Kong stops in Beijing about three hours where I need to change planes in Beijing to fly to Hong Kong. On the way Hong Kong I would like to visit Beijing for 72 hours than return to Los Angeles. My main concern is since I am changing planes in Beijing to fly to Hong Kong and than coming back from Hong Kong to Beijing for the 72 hour visa en route to Los Angeles would that cause any problems? Appreciate any advice you could provide.