Led by Chui Sai On, the fourth-term chief executive of the Macao Special Administrative Region (SAR), and administered by Chinese President Xi Jinping, the principal officials of Macao's fourth-term government and the new prosecutor general of the Public Prosecutions Office are sworn in at a celebration gathering marking the 15th anniversary of Macao's return to the motherland in Macao, south China, Dec. 20, 2014. Chinese President Xi Jinping attended the celebration gathering and the inauguration of the fourth-term chief executive and government of the Macao SAR on Saturday morning. (Xinhua/Zhang Duo)