I will visit Xiamen and want to rent a car drive to Hanjiang, Putian myself.

As I know, it is a little hard to rent a car upon your arrival at the airport. I suggest you suggest a car rental company in advance and negotiate the details. Well, I know a good car rental company named E-hi Car Rental Service. You can find it in the internet for further requirement.

It seems that you have to be accompanied by a Chinese with driving lisence. Exact information is suggested to consult the car rental service.

It is not that hard to drive to Hanjiang. But to make everything go very smoothly, you'd better have a local person or Chinese as company.