Vincent C. Siew (C), honorary chairman of the Taiwan-based Cross-Straits Common Market Foundation, arrives in Haikou, capital of south China's Hainan Province, on April 5, 2013. Siew will attend the Boao Forum for Asia (BFA) Annual Conference 2013 in Boao of Hainan, which will be held from April 6 to April 8. (Xinhua/Zhao Yingquan)