Hainan (海南) Island is the southmost point of China and has a tropical climate. It has some tourist-oriented cities with beaches and many coconut trees. We stayed some days in Haikou (海口) and Sanya (三亚).
Hainan also has some of China's rainforests. We made a trip to Yanoda rainforest park (呀诺达雨林). It was quite interesting, though somewhat unexpected: The trips to this rainforest are very organized - you never walk really in the forest, only on prepared wood-ways and the whole thing is more park-like and you're guided through it.
As I already wrote, we didn't manage to take the ferry and got to Haikou (and later to Sanya) by train - however, there is no bridge, so the train is put on a ship. Sadly, it wasn't possible to leave the train during that time. On our way back, it was somewhat difficult to get a ticket, as we left on the day after the typhoon - and all the people who planned to leave the day before either on the ferry or on a train also tried to get tickets so we had to queue for four hours.