Two hours. Official website, the drifting of Guaitan in Anhui Province, shows that Guaitan drifts for 4.5 kilometers and lasts for about two hours. The fare is 80 yuan per person. There are two surfing slides and five rapids in rafting. The water turns around the mountain and the mountain runs through the water. You can not only enjoy leisure in silence, but also feel pleasure in exercise, make your body and mind happy, and achieve dynamic and static balance.