Be wary of the "one-dollar small lottery" that is popular on primary and secondary school campuses. These small lottery tickets cost 1 yuan each, the shape is a small card with different patterns, there is no standard manufacturer and printing factory.
Similar to "scratch music" has the nature of gambling, after uncovering a layer there will be "a number" or "thank you for patronage" words. Some parents of students reported that many minors are addicted to this, because the probability of winning the lottery is low.