"Iron flower" has a history of 1 thousand years in China, originated from the sacrificial activities of blacksmiths, and became one of the Taoist rituals in China. It is now China's intangible cultural heritage project. During the performance, the pig iron was burned to more than 1600℃ and turned into molten iron. The performers scooped up the molten iron into the air, and the golden sparks more than ten meters high bloomed in the night sky.