Try not to send autographed photos, buy her some postcards and posters of Jackson Yee, and take her to a TFboys concert if possible. After all, there are many fake signatures. If it is true, others will not sell it, and the price may not be cheap. Might as well watch a concert. If you are willing to pay a high price to buy it back, really find someone you know and reliable, and try not to find any netizens. If you go to a treasure, usually dozens of pieces are fake, and hundreds of pieces may be fake, so you need to be very, very cautious.