Tianyi Luo and Yanhe are both concave-convex powders. According to relevant public information, concave-convex powder refers to CP powder without moral integrity, that is, fans' nicknames accepted by idols and CP groups, while Tianyi Luo and Yanhe are both virtual singers of the VOCALOID family, and Yanhe is a descendant of Tianyi Luo. Both of them are virtual characters and don't hate each other. There is a lot of CP powder without moral integrity.