China's President Xi Jinping (front L) and First Lady Peng Liyuan take part in a welcoming ceremony upon their arrival at Julius Nyerere International Airport with his Tanzanian counterpart Jakaya Kikwete (front 2nd L) and First Lady Salma Kikwete (front R) in Dar es Salaam, March 24, 2013. Xi faces growing calls from policymakers and economists in Africa for a more balanced trade relationship between the continent and China as he arrives in Tanzania at the beginning of an African tour on Sunday. REUTERS/Thomas Mukoya (TANZANIA - Tags: BUSINESS POLITICS)
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