I would like to hire a car or van from Xiamen to DeHua county

If you hire a car, the fare is around 600 to 700RMB.
It takes around three hours by car.
If you are not in a group, it is not suggested to hire a car. From Fanghu Bus Station and Jimei Station, you can find direct buses to reach Dehua from 06:30 to 17:35 every day and the interval is around an hour.

Thank you very much, this is a helpful info.