During Chen 's visit in Taipei , he was met with a series of strong protests directed at himself and Ma Ying-jeou , some of which were violent , with Molotov cocktails being thrown by the protesters at riot police . A series of arrests were made after the protests , with a secret letter being sent from the police to a member of the media . Local police reported that 149 of its officers were injured during the opposition protests . Chen referred to Ma simply as " Mr. Ma , " not as " President " . However , this is consistent with the previous convention in 2008 , when KMT ex-politician Lien Chan met Hu Jintao in Peru . Lien did not call the PRC paramount leader Hu Jintao " President , " but instead used his title " General Secretary " as the Leader of the Communist Party of China
in Peru
APEC Peru 2008
Ma Ying-jeou