Luo Tianyi and Yue Zhengling were virtual singers that appeared in many anime, games, and novels. In the novel Luo Tianyi, Luo Tianyi was a virtual singer with great musical talent, created by the author Xiao Qian. In the game, Luo Tianyi was one of the virtual characters that players could control her songs and voice. In anime, Luo Tianyi and Yue Zhengling's images often appeared in various types of works, such as " Vocaloid " animation," Humanoid Computer Angel Heart " and so on.