Workers clean rubbish at Xiuying port in Haikou, capital of south China's Hainan Province, Feb. 22, 2018. Ferry services resumed Thursday on the Qiongzhou Strait, a major gateway to China's southernmost island province of Hainan, but time will be needed to clear the backlog of stranded vehicles. Haikou has set up 237 volunteer service areas for travelling families between Sunday and Thursday morning. Over 6,500 volunteers have offered help. (Xinhua/Zhao Yingquan)?