Vehicles wait for ferry service at Xiuying port in Haikou, capital of south China's Hainan Province, Feb. 21, 2018. As the fog continues dispersing, with the visibility being more than 1,000 meters, the ferry service is resuming in ports in Haikou. A heavy fog has disrupted ferry services on the Qiongzhou Strait in south China, stranding over 100,000 passengers and more than 10,000 cars in Hainan island, local authorities said Wednesday, the last day of Spring Festival holiday. Hainan, known for its tropical climate and clean air, is a popular destination for Chinese tourists during the Lunar New Year holiday. (Xinhua/Zhao Yingquan)