After the war. After the disaster, life goes on. Harry returned to Hogwarts, and the post-war reconstruction was gradually on track... During a general cleaning, Harry accidentally discovered a photo in the drawer of Sirius's desk. It was a picture of him with a young Asian girl. The girl in the photo was wearing an old-fashioned Hufflepuff school robe, with gentle eyes and a smile. The young Sirius put his arms around her, and the look on his face made Harry feel familiar - it was the look on Bill's face when he looked at Fleur at the wedding. On the back of the photo is a line of beautiful Chinese characters: May you be safe and happy. Yours, Yang Qiong.
Purpose: Cherish the past but not be limited by it, and believe that the future can be expected.