The famous sentence is "it is as bright as an archer shooting down nine suns in the sky and as fast as an angel in front of a dragon's wings." She began to be like a thunderbolt, venting its anger and ending the shining calm like rivers and oceans. " These four sentences, or "like four sentences", have different interpretations by predecessors, which generally describe the beautiful impression left by Gongsun Dance on Du Fu. Shooting for nine days may be a description of Gongsun's spinning or tumbling dance with a red flag, torch or sword, as if one fireball was spinning from top to bottom; "Dragon Dance" is about Sun Pian's lightness and dancing; The wrath of thunder describes that the dance is coming to an end and the momentum is converging; When the rivers and seas converge, the dance stops completely, and the dance floor is quiet and open inside and outside, as if the rivers and seas are calm and the water is as clear as water. The author uses rhetorical devices such as parallelism, antithesis and metaphor to describe the course of Gong Sundaniang's swordsmanship, which is vivid and dynamic.