Rui En ventured into Taiwan in 2002 with the stage name 芮恩 (). She made her first appearance as the female lead in label mate Jay Chou's music video for "Secret Code" (暗號) and went on to co-endorse Panasonic GD68 with him. Rui En subsequently released her debut regional Chinese album, "Rui ∑n vol. 01", in the same year under the co-production of Hype Records and Alfa Music. Chou composed the song "White Feather" (白色羽毛) which was released in her debut album, "Rui ∑n vol. 01."