Asia attraction canyon china gorge landscape river rocks touristic water Yangtze bridge concrete architecture door dooway structure symmetry under Da Ning Daning gorges mountain tributary alarm authentic drum ethnic ling rural village Xi Xiling boat cargo junk sail sailing ship tradition traditional transport transportation vessel buddha buddhism Buddhist Monk Monks pagoda red religion religious Shibaozhai temple tourism building dam house three gorges water level yellow river fishing harbor old port crop farm farmer field submerged