"福" in Chinese. It is a pictographic word. The left part of the word is a person who is worshipping, and the right part is originally a picture of a liquor jar. The word was created to mean worshipping with liquor. In the earlier phase of Chinese civilization, only rich people could drink liquor. So the word at the beginning meant blessing for wealth. However, with time going by, Chinese endued more meanings to it.
Today the word blessing used as decoration for Chinese New Year mean "Five lucks arrive". The five lucks are: long life, wealth, dignity, peace and happiness, and many offspring. The word must be written on square or rhombic paper. Both square and rhombic form mean the five lucks come from eight directions. The background color of the paper must be red. Red is the most auspicious color in Chinese culture.