Cars board a ferry to leave for Xuwen in south China's Guangdong Province at Xiuying harbour in Haikou, capital of south China's Hainan Province, Feb. 20, 2018. A heavy fog has disrupted ferry services on the Qiongzhou Strait in south China, stranding passengers in over 10,000 cars in Haikou city, capital of Hainan Province, local authorities said Tuesday. As fog started to disperse Tuesday morning, ferry services resumed in two ports in Haikou, but local government advised travelers against heading to the ports before 3 p.m., as avenues leading to them remained heavily congested. (Xinhua/Zhao Yingquan)