Chinese President Xi Jinping, also general secretary of the Communist Party of China Central Committee and chairman of the Central Military Commission, shakes hands with Chief Executive of the Macao Special Administrative Region (SAR) Chui Sai On after landing at Macao International Airport in Macao, south China, Dec. 18, 2019. The president is expected to attend a gathering celebrating the 20th anniversary of Macao's return and the inauguration ceremony of the fifth-term government of the Macao Special Administrative Region (SAR) on Friday. He will also inspect the Macao SAR. (Xinhua/Ju Peng)