Tianxia Diyi, also known as Royal Swordsmen, is a wuxia television series. The series was directed by Deng Yancheng and Wei Liyuan, and starred Roger Kwok, Li Yapeng, Wallace Huo, Dicky Cheung, Damian Lau, Tammy Chen and Michelle Ye in the lead roles. It was first shown in 2005 on CTS in Taiwan.