1. The ultraviolet radiation in Hainan Island is very strong. Visitors should bring sunglasses, high-index sunscreen and umbrellas. Pay attention to choose some breathable clothes to wear, drink plenty of water and a proper amount of salty soda; If you have symptoms of heatstroke, you should leave the sultry environment in time, rest in the shade, and take ten drops of medicine.

2, free activities try to avoid traveling alone. Colleagues' cell phones and room numbers must be remembered. Remember the name and location of the hotel.

3, eat the sea by the sea, seafood is of course the first choice, but you must not eat too much, do not eat unclean food, you can drink some white wine and rice vinegar in moderation when eating seafood, which plays a role in sterilization and disinfection. To prevent accidents, you need to bring digestive drugs and anti-inflammatory drugs. If you don't have local friends to lead you, you'd better not eat the food on the stall.

Hainan is rich in fruits, such as coconut, mango, betel nut, pineapple and jackfruit, which are sold in street stalls. You shouldn't eat too much, but you can take some home and check it on the plane.

Don't eat cold drinks, watermelons and other foods within one hour after eating seafood. Don't go swimming immediately, and it is not advisable to eat cold drinks, watermelons, seafood and other foods immediately after swimming.

6. Visitors who participate in high-speed motorboats, seaplanes and high-speed cruise ships should obey the arrangement of the staff there, wear protective clothing and implement various safety measures, so they should not be careless.

7. Hainan specialty coconut carving, shell carving, coral bonsai, pearls and crystals must be carefully identified when buying, and the price must be bargained. Coral was strictly brought aboard.

8. The camera, camera battery, film, adhesive tape and charger should be fully prepared. Don't be stingy with your movie, or you will regret it when you get home. When playing on the beach, be careful not to let fine sand or seawater enter the camera and video equipment.

9. You must take good care of your certificates, coins, the above-mentioned equipment and other items. Otherwise, stay in Hainan for a few more days.

10, Hainan is a pure land with almost no pollution. Don't waste and destroy plants and cultural relics at will, and pay attention to protecting Hainan's unique and excellent environment.