It is unwise to stop Mayor of Taipei, Ma Ying Jiu (馬英九) to come to Hong Kong.
The worst is that there were 2 groups of Tung and Ma's common friends coming to Taiwan to ask Ma making an excuse from his side to turn down the invitation. Ma did not rejected the possibility that these 2 groups of their common friends were sent by Tung. As all know that Ma is considered to be a supporter of one China. Thus, I think, establishing healthy relationship with Ma will definitely help the progress of the reunification of China. Yes I am a supporter of reunification of China.