9 / 11 was a disaster for mankind as a whole, but no one can empathize with it more than New Yorkers. In addition to grief and pain, New York was left with 16 acres of land blank on the map after the incident. It is a big question whether to rebuild the World Trade Center as it is, to redesign and build the World Trade Center, or to leave the land for people to remember forever. Richard Harkin, the director of the film, was the editor of the Oscar-winning documentary "Hunt the Friedman Family." from the perspectives of the government, developers, architects and ordinary people, he described in detail the unexpected contradictions and struggles that took place in this land in the past 12 years after the incident.