The leaders of Taiwan and mainland China signed Monday in Chongqing, Sichuan, a free trade agreement that will profoundly change the relationship between the two countries. Called framework agreement on economic cooperation (ECFA), it plans to introduce preferential tariffs on 539 products exported from Taiwan to China, the island being provided by 250 Chinese products. More favorable to Taiwan and in Beijing, however, it divides the citizens of the island. They fear that China, which does not recognize the Republic of Taiwan and considers it a renegade province, one profits to strengthen its hold on her and never grows to become like Hong Kong, part of its territory since 1997 .