The project is located on the second floor platform of the North gymnasium of Tsinghua University campus. The top elevation of the platform is 5.2 meters, and the plane size of the structure is 59 meters long and 45.5 meters wide. The whole membrane surface is tensioned and formed through the support points provided by the shuttle shaped steel columns around. The membrane surface covers the lower site and can be used as the sun shading and rain blocking of the roller skating training ground. The whole membrane building is tall and straight.