Rehang Island: The shooting place of milk tea in summer is a very mature holiday island. I think it's better to choose Lagula Resort. Hotel facilities and catering are very cost-effective. I must go to that ocean park (the hotel has a free boat every day, but the tickets are charged). This is the most beautiful sea area I have ever snorkelled in. That's great. Try your luck at the beach on Laguna's back at night to see if you can see the tears of the ocean (that is, the dream scene of a whale jumping out of the fluorescent sea in "The Fantasy Drifting of Pi").

Small Anchorage Island: The whole primitive island is famous for its frequent sighting of blue-ringed octopus (highly toxic, I didn't see it), giant lizards (this kind is everywhere, about 2 meters long, which is scary, but it doesn't matter if it doesn't bite people), and swimming with sharks (I tried this, and the sharks are less than 5 meters away from me, and I am still scared).