An protester, center, scuffles with security outside of the Grand Hotel where delegates of Taiwan's Straits Exchange Foundation and China's Association for Relations Across the Taiwan Strait gathered to negotiate, Tuesday, Dec. 21, 2010, in Taipei, Taiwan. A senior Chinese envoy arrived in Taiwan on Monday to sign an agreement on sharing medical information and cooperating in the development of new drugs, amid rapidly improving ties between the once bitter foes.  (AP Photo) TAIWAN OUT

An protester, center, scuffles with security outside of the Grand Hotel where delegates of Taiwan's Straits Exchange Foundation and China's Association for Relations Across the Taiwan Strait gathered to negotiate, Tuesday, Dec. 21, 2010, in Taipei, Taiwan. A senior Chinese envoy arrived in Taiwan on Monday to sign an agreement on sharing medical information and cooperating in the development of new drugs, amid rapidly improving ties between the once bitter foes. (AP Photo) TAIWAN OUT