Volunteers offer medical support for stranded tourists in Haikou, capital of south China's Hainan Province, Feb. 24, 2018. More than 12,000 vehicles returning home from a week-long break remained stuck in a seemingly endless traffic jam for ferries in Hainan Province as of Friday afternoon. The civil affairs bureau of Haikou has sent water, food and quilts to stranded passengers. (Xinhua/Chen Xi)