Hong Kong Chief Executive Leung Chun-Ying, left, watches as Mexican President Enrique Pena Nieto, right, signs the guest book before their official talks at Government House in Hong Kong on Friday April 5, 2013. Enrique Pena Nieto arrived in Hong Kong on a trip aimed at deepening economic ties and widening relations with the Asia-Pacific region. (AP Photo / Dale de la Rey)

Associated Press
Hong Kong Chief Executive Leung Chun-Ying, left, watches as Mexican President Enrique Pena Nieto, right, signs the guest book before their official talks at Government House in Hong Kong on Friday April 5, 2013.  Enrique Pena Nieto arrived in Hong Kong on a trip aimed at deepening economic ties and widening relations with the Asia-Pacific region. (AP Photo / Dale de la Rey)
Hong Kong Chief Executive Leung Chun-Ying, left, watches as Mexican President Enrique Pena Nieto, right, signs the guest book before their official talks at Government House in Hong Kong on Friday April 5, 2013. Enrique Pena Nieto arrived in Hong Kong on a trip aimed at deepening economic ties and widening relations with the Asia-Pacific region. (AP Photo / Dale de la Rey)
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