Whoaa they cannot be fans!! His concerts are definitely worth attending! No fr maybe someone who was jealous of his success may have pretended to be a fan and sent him letters to make him feel this way. But we know him better we have no doubts about his work. Yixing got good live vocals he trained well too he doesn't need to prove you anything. His voice, his dance, his performances and everything is something I myself wanna witness one day. They don't have to doubt him. He's Zhang Yixing. He makes the best out of everything! He's seriously so amazing! And I really admire him for producing his own music. He has his own style for everything!