Chiang Pin-kung (front, L2), chairman of Taiwan's Straits Exchange Foundation (SEF), poses for photos with Chen Yunlin (front, R2), president of the Chinese mainland's Association for Relations Across the Taiwan Straits (ARATS), in Taichung, Taiwan, Dec. 21, 2009. Chinese mainland's chief negotiator for Taiwan affairs Chen Yunlin Monday arrived in Taichung for a new round of talks. [Photo: Xinhua]