Hainan natives are already familiar with the climate here, so it is not easy to get a tan, but it is not so easy for mainlanders. I have studied in Hainan University for one year, and I have never spent it in vain. First, 17 days of military training, blacked out for a semester. The sun was too strong during military training, and many people were sunburned. Swimming in the second semester is a compulsory course in physical education, and I lost my grades when I went home during the winter vacation. It's not dark when you swim in a bathing suit, and it's dark when you don't wear a bathing suit! Sunscreen is not very useful either. Anyway, it will definitely be dark in freshman year, and there won't be too many outdoor activities in sophomore year, so it will slowly change back! This way, girls have to take an umbrella as soon as they go out! That's about it!