I want to travel to a warm place during the Spring Festival. Is there any good place to recommend?

It is a good choice to go to Hainan during the Spring Festival. As a tourist city, Hainan is very popular with tourists every Spring Festival. It's not so cold in winter there, and you can even wear short sleeves, but of course you should pay attention to sun protection. How can you go to the seaside without underwater photography, and how can you lack professional underwater photography equipment? BIKI, an underwater photography robot fish, is bound to do its part. The following is BIKI's real shot renderings.