It&;s December 16, 2018. Today, the temperature in Haikou is 14-18, and that in Sanya is 20-29. The temperature in the north and south of Hainan is very different. Haikou is a little cold, but Sanya is very warm. This year, the cold air came down slowly, and Hainan began to cool down in early December. In previous years, it generally began to cool down at the end of November. As for what you said, Guangzhou is cold and Hainan is warm, which is inevitable, because the latitude of Hainan is different from that of Guangzhou, so the temperature is different. The temperature in Guangzhou has dropped below 10, and Hainan is not that cold. Another point is that in some areas of Guangdong, Guangxi and Hainan, when the temperature drops, it will be wet and cold. Although the temperature is not so low, it is also very cold. Southerners may get used to it and don&;t feel anything, but for northerners, it is really unbearable. Let me talk about an experience now. In the Spring Festival of 2012, I made an appointment with a colleague to travel to Guangzhou. When I was in Hainan, the sun was shining, and I was only wearing a bottoming dress and an overcoat. However, after we arrived at Guangzhou Baiyun Airport, I felt that the temperature was clearly different, so I quickly put on the clothes I had prepared before. During the few days in Guangzhou, although the weather was a little cold, we had a pleasant trip, so we stayed there for five days before returning to Hainan.