During the Spring Festival, every family pastes the character "dafu" on their door for good luck.

dafu 是汉语拼音，指"大福"这个汉字组合。 "大"意思是"大的、重要的"。 "福"意思是"福气、好运"。 dafu 合起来指"大福字"，是中国春节传统中贴在门上祈求好运的红色装饰字。