In principle, this is impossible, only under special circumstances. Ancient books are unique or unrepeatable documents. If your credibility is not enough, I think you should forget it. Don't embarrass the librarian. I'm sorry to have heard so much about the capital library. All the information about him was told to me by an educated youth studying in Beijing. After a long time, it may not be accurate. Since the card says yes, I guess ordinary ancient books can be borrowed. Don't worry.