South Korean President Park Geun-hye was to pitch for freer trade in an annual summit of Pacific Rim economies opening in this Indonesian resort island on Monday while holding a series of one-on-one meetings, including one with Chinese President Xi Jinping, on its sidelines. Park arrived in Bali the previous day for this year\'s meeting of the Asia-Pacific Economic Cooperation (APEC) forum, a grouping of 21 economies, spanning from Southeast Asia to North and South Americas, which account for 58 percent of global gross domestic product and 49 percent of world trade.