hi,u are so lucky. the east haikou staion has the bus to go to sanya from the last week. and u can take the bus to sanya in the south station too. you can take the train to guangzhou in sanya and haikou too. the trains will go to guangzhou, but if u really want to go there at the moment now, i do not think u can get the train tickets, cause this is the spring festival transportation peek time. i tis so different for u to buy the tickets. and so, that is all