What does virtual idol mean ah?

It's the star of a secondary virtual image. Like Hatsune Miku, Luo Tianyi this kind of, but Hatsune Miku and Luo Tianyi and pure virtual idol is not the same, pure virtual idol just only to attract popularity is enough, and Hatsune Miku and Luo Tianyi was only virtual singer, but because later the popularity of the increasingly high, coupled with the vocaloid virtual singer's practice: open holographic concert, the result is to become a virtual idol. The biggest difference between the virtual singer and virtual idol is that it has no sound library (singer sound library), virtual singer's body is the sound library software, virtual idol's body is only a secondary image.