Because 3 is the number when the manufacturer makes it. According to official website's inquiry, the prefix "Double Happiness Label 1, 2, 3" in the business department of Wuxi Tobacco Monopoly Bureau respectively represents the morning, middle and evening shifts of the manufacturer to distinguish the cigarettes produced by different shifts. Double Happiness is a brand of sports equipment, which was born in 1959 and was named by Premier Zhou Enlai. China Trademark Network shows that the trademark "Double Happiness" belongs to Shanghai Double Happiness Co., Ltd., with application/registration number 1232279, application date1May 27, 997, and registration announcement date of 65438+February 265438 +0.