The time I spent in Hunan, China, was one of the best trips I've ever made. I loved the place. It was grand and beautiful... and remote and uncrowded (well, uncrowded for China)... and generally breathtaking.
I spent a good deal of my time in Zhangjiajie, and some in the small town of Feng Huang. In between those two main parts of our trip, we took a day to go rafting.
The river along which we rafted had a fair bit of white waters, though it remained mostly tame throughout the trip. Even so, the scenery was so beautiful that I might have hated to go through it any more quickly than we did.
Our boatman was a particularly colorful sort. He sang to us as he navigated the waters, and played along with the kids who paddled along beside us shooting us with water guns handmade from bamboo. I enjoyed hearing his folk songs and seeing his play with the young guys.
If you are in Hunan, the rafting trip is worth taking. It isn't necessarily a thrills and spills type of adventure, but it is a chance to see the native beauty of the place, and to enjoy the local people.
You can book a rafting trip from Zhangjiajie.