1. Take the high-speed train: You can take the high-speed train C7442 from that big town to Haikou Station, and the whole journey takes about 1 hour. After arriving at Haikou Station, you can take a bus or taxi to your destination.
2. Take a long-distance bus: You can take a long-distance bus from that big town to Haikou Station, but it takes about 2-3 hours by car, depending on the traffic situation and the specific departure place.
3. Rent or charter a car: You can also rent or charter a car to Haikou Station in that big town, but you need to pay attention to road conditions and traffic safety.
In a word, which mode of transportation you choose depends on your personal situation and specific needs. It is suggested to check the itinerary and air ticket price in advance in order to better arrange the itinerary.