Looking back, sooner or later there was a chance to make such a mistake, as he is quite unfamiliar with the magic of this world and its limitations – the only knowledge he has about it, is from his memories about the adults’ conversations, when He Xuan himself was in a baby’s body, and from memory’s fragments of that arrogant "Dark Lord", which is clearly not much as there are only six of them. The aforementioned person also gave "Harry Potter" some lead in this area, but the former ghost prefers not to rely on it, as is not sure how full or trustworthy that is. 