I wonder if there is a cultural factor to all of this? I've never been to Hong Kong, but when a friend of mine went a number of years back, he also had trouble visiting certain schools even though he called ahead and made appointments. If I remember correctly (we haven't talked in a while), he had an appointment to visit Yip Chun. He went to the location where they were practicing, and they wouldn't even open the door to talk to him. The fact that he was then associated with another well known WC organization seemed to be the problem. Perhaps that was the root of your problem too, Kamon?