The next day we were originally supposed to go to Haikou, which is north of Hainan. We got up early and headed to the railway station, which was quite far from our resort. Just our luck, it turns out that even when traveling within the same country (in the same province!), we needed our passports to buy tickets and we had left them in our hotel safe. Darn it! Went all the way there for nothing. So instead we rode all the way back to the hotel and came up with a contingency plan for the rest of our time in Sanya.