This photo taken on May 11, 2009 shows the inside of a tunnel on Yingxiu-Dujiangyan expressway which connects Yingxiu Town and Dujiangyan City, both hard-hit by last year's massive earthquake in southwest China's Sichuan Province. [CFP]

Workers do the last-minute cleaning inside of a tunnel on Yingxiu-Dujiangyan expressway that opened Tuesday. The expressway connects Yingxiu Town and Dujiangyan City, both hard-hit by last year's massive earthquake in southwest China's Sichuan Province. [CFP]