But as far as he can understand, Harry didn’t cause any accidental magic, when he was with Malfoys or Potters. But for now almost all his knowledge about the "magical" part of the world is from the voice’s talkings, which is not a highly trusted source. For now Harry and He Xuan both estimate that their situation is normal, or at least not too strange (as much as it can be with this reincarnation thing).