Zero, the name of the ruins of the World Trade Center after September 11. Ground Zero is a must-see place for every visitor to New York, but today, contrary to the situation of climbing up the World Trade Center to look down on the city before the attack, heavy-hearted people look at the names of countless victims on the water platform, or stand on the observation platform, put them in through the wire mesh, and the debris clearance seems to be in progress...