A passenger liner sails on the upper reaches of the dam of the Three Gorges Water Conservancy Project, as the water level lowering vestige clearly in vision, in Zigui County, central China's Hubei Province, May 30, 2010. The Three Gorges Reservoir had lowered its water level to 150.40 meters by 8:00 a.m. Sunday from the climax of 171.43 meters during last year's probationary water storage. The water level is to be further lowered to 145 meters by June 10 in a preemptive measure for flood prevention.