Zhou Keyu's fans are called astronauts, and he chose silver as the color of his fans' support. Silver represents the image of the Milky Way in the universe, symbolizing the infinity and shining light of the universe. This choice is decided by the fans to show their support and love for Zhou Keyu. Through a unified support color, fans can show their unity and enthusiasm in concerts, activities or social media, and cheer for Zhou Keyu.