Xinhua photos of the day

Patrick Cammaert (C) arrives at the Sanaa International Airport in Sanaa, Yemen, on Dec. 23, 2018. Patrick Cammaert, the head of a UN team monitoring the UN-backed cease-fire in Yemen's Red Sea port city of Hodeidah, joined his six-member team to monitor the withdrawal of the Yemeni rival forces in Hodeidah. (Xinhua/Mohammed Mohammed)