Chinese president Xi Jinping (center R) and his wife Peng Liyuan (C) are welcomed by Mongolian children upon their arrival in Ulan Bator during Xi's visit to Mongolia

(L-R) Chinese president Xi Jinping, Mongolian President Tsakhiagiin Elbegdorj, Chinese first lady Peng Liyuan and Mongolian first lady Kh.Bolormaa attending the welcome ceremony at the Chinggis square in Ulan Bator for Xi's visit to Mongolia

Chinese president Xi Jinping (L) is escorted by Mongolian President Tsakhiagiin Elbegdorj (front R) at the welcoming ceremony in Ulan Bator during Xi's visit to Mongolia

Chinese president Xi Jinping (L) shakes hands with Mongolian President Tsakhiagiin Elbegdorj during a signing ceremony in Ulan Bator during Xi's visit to Mongolia