Vincent Siew votes. On 11 April 2008, Vincent Siew departed Taiwan to attend the Boao Forum for Asia, held in Boao, Hainan, which is administered by mainland China. Siew is a founding delegate of the forum from 2001, and he attended once again in his capacity as chairman of the Cross-Straits Common Market Foundation. Siew had met with Chinese president Hu Jintao in Bo'ao in 2001. However, his special status as the vice president-elect in 2008 made his attendance more significant, but also more controversial in Taiwan. His meeting with Hu Jintao was the highest level exchange between Taiwan and mainland China
Orders of precedence in China overall on the leadership protocol hierarchy, immediately after Hu Jintao. At the conclusion of the 18th Party Congress, when Hu Jintao retired as General Secretary, Jiang was ranked 2nd overall, after Xi Jinping, and Hu Jintao was ranked 3rd, after Jiang. Since 2013, judging mostly based on the official obituary notices of various deceased party officials, Jiang and Hu seemed to have progressively moved "lower" on the protocol strata, first below all current members of the Politburo Standing Committee, and as of 2014, behind all members of the sitting Politburo. At major functions, Jiang and Hu sat immediately next to