It's a gazebo at the top of the mountain. There are, however, restaurants in similarly situated areas in Huangshan. There are stairs from the city at the bottom all the way to the top. Takes about 3 hours to walk up it. That one particular picture is of one of the harder to climb mountains of the group. It's being remodeled so that the walkways will have handle bars on the side so that falling is less likely. There are a couple of hotels on the top of those mountains too that are actually quite nice.