You can buy Changchun postcards at places such as Northern Postcard City, Taoli Postcard Street, Railway Station Postcard Shop, etc. These stores all sell authentic Changchun postcards, and they are cheap and affordable. Once you enter, you will find that the postcards are rich and colorful, providing great fun to those who collect postcards. Changchun postcards refer to communication cards made with the characteristic buildings, historical sites and scenic spots of Changchun City as the background, using long color scrolls, photo calligraphy, pen sketches and other techniques.