Some primary school students are addicted to "cigarette cards" and need to be vigilant. "Cigarette cards" are cigarette labels cut from cigarette boxes and then folded into cards the size of playing cards.
Some students secretly take pictures of cards during class to "practice their skills"; or put the cards in their pencil cases to "appreciate" them quietly. Some parents said that because of playing "cigarettes cards", their children know more about cigarette smoke than adults who don't smoke. Students who are obsessed with cards will pay special attention to the trash cans, collect boxes on the roadside and even go to garbage transfer stations.