Works on the principle of the cantilever bridge.

So this is an 80 foot cantilever it's quite substantial.

The bridge was of a relatively new type, known as a cantilever, which had become quite fashionable. Although it was only slightly longer than the highly successful cantilever bridge over the Forth River near Edinburgh, Scotland, the Quebec Bridge was so inadequately designed that it collapsed before it was completed.

According to the introduction made by Liu Changbao, the project leader of Beijing No. 5 Construction Engineering Group, the building area of the Performing Arts Plaza project was 4500 square meters, and the total amount of installed steal was 1182 tons. The steel roof was supported by the cantilever steel truss with a 26 beam umbrella arrangement. It would appear in the shape of a butterfly flying up high under the tension created by steel strand draglines.