1. During the activity, go to Huai 'an Library or participating bookstores.

2. At the event site, find the place where Huai 'an passport reads the map and punches in.

3. At the punch-in place, take a punch-in photo with your mobile phone or camera, and the name and punch-in date will be displayed on the photo.

4. Upload the photos to the designated activity platform or social media to finish punching in.