If students go by bus, the fare is not cheap, and it takes longer to transfer by train. The specific fare is not very high. You can call Longyan station to ask.

To go to Dongshan Island, there are three main attractions: Widow Village Exhibition Hall (I believe you will feel more after watching the movie Widow Village); Wind-driven stone scenic spot; Maluan Bay Beach. You can stay in a hotel by the sea, it won't be very expensive, and the price of Dongshan is not high either. The sea is beautiful. You can swim and dive. You can stay there for a barbecue at night. You can make many friends you meet by chance.

Specialty, mainly asparagus. If it is not asparagus season, you can take some asparagus tea and dried asparagus home, which can not only reduce fire, but also reduce weight and beauty, and lower blood pressure. The kelp and seaweed over there are very good and fresh. You can take them home to eat when you have the chance.

I hope my answer will satisfy you.