Photo taken on Sept. 11, 2009 shows the construction site of the new World Trade Center in New York, the U.S.. The eighth anniversary commemoration of the 9/11 attacks is held at the Ground Zero in New York on Friday to remember those who lost their lives in the attacks, which killed more than 2,700 people with the destruction of the World Trade Center on Sept. 11, 2001. [Xinhua]