Haikou and Sanya, where do the elderly live? Mainly in terms of health, I heard that Sanya is not as humid as Hainan. Where are the others?

Point out your mistakes first. Haikou and Sanya belong to Hainan Province. Geographically, Haikou is the capital city of Hainan Province, and Sanya is also a city of Hainan Province, with Haikou in the north and Sanya in the south. The average temperature in Sanya is higher than that in Haikou, and the humidity in winter is not as high as that in Haikou. There is almost no foggy weather. In summer, the weather outside Sanya is similar to that in Haikou. Relatively different, Haikou will be hot even if there is a shade outside the city, but in Sanya, it won't be hot as long as you don't stand in the sun. There is still a certain temperature difference between the four seasons in Haikou, so you can wear a cotton-padded jacket in winter. In terms of economic consumption, the country is now vigorously building an international tourist island. The whole Hainan Province is a development zone, and Sanya is a tourist area. The consumption level is naturally not low, and the price in Haikou is relatively lower than that in Sanya. In terms of transportation, Sanya is a gathering place for migratory birds. There are many people in winter and few people in summer. There is almost no traffic jam except in winter. There are many people living and working in Haikou, so the traffic situation is almost the same all year round. In terms of medical care, there are people's hospitals in Haikou and Sanya, and the medical conditions are similar, both in urban areas. As for where to choose, it's up to you. I suggest you come to Hainan before you decide.