There is no need to buy it at all. When the boss signed a CD for you, you said you could sign a poster for Stefanie. Stefanie is easy to talk to, just be serious (she may be stopped by the staff), and Stefanie is now in the publicity period, and many of them are signed for sale. If you buy it online, I've seen 150 yuan, and it's very cheap. How long can your sister last? ......