The Cang Yue Yu series was a novel series by Cang Yue that mainly narrated the love story between Yun Huan and Mu Yan. The series included Feather, Feather·Flowing Light, Feather·Chaos, and Feather·War. The four novels told a story about dreams, love, and war. In the novel, Yun Huan and Mu Yan were two young warriors who had experienced many adventures and challenges together, displaying their courage and wisdom while also experiencing many emotional entanglements. The series was well-loved by readers for its beautiful writing style and profound theme. It was also one of Cang Yue's representative works.