Tianjin “tower of ring”, this tower is located in Tianjin Yinhe Square. The cylindrical tower is made up of a series of overlapping rings, and these wavy rings are stacked on top of each other to form an eye-like pattern. Cast steel is used as the material, and corrugated steel is made by using molds. People can only experience the interior space of this tower on the ground floor. The construction of the project lasted 4 months and was completed in June 2012.