An artist duo named "Letwo" completed the transformation of Kapoor's "Cloud Gate" and was named ().

Answer: "Light Field"

Analysis: The award-winning sound and light installation "Light Field" was created by Luft Werk. Letwo is not the name of one person, but an artistic collaboration composed of two artists, Bachmaier and Sean Gallero, who graduated from the Art Institute of Chicago. "Cloud Gate", nicknamed "The Pea", is now a landmark public art work in Chicago. The biggest feature of "Pea" is that this steel sculpture has a good mirror distortion effect. "Light Field" uses a plane composed of lights of different colors laid under the "Pea". After the mirror reflection of the "Pea", it forms two light and shadow combinations on the ground and in the air, supplemented by music, making Chicago's landmark sculpture "Clouds" "Gate" radiates unprecedented brilliance and achieves a new artistic effect.