The name Fu2 in Chinese / Japanese...

蝠 is the simplest way to write bat in Chinese and old Korean Hanja.

This also means bat in Japanese but is almost never written alone like this (it's often part of other titles for vampire bats or fruit bats).

In Chinese culture, the bat is a good luck charm, as the pronunciation is very similar to the word for “good luck” or “good fortune.” The character for bat (蝠) even looks like the good luck (福) character.

福 is pronounced “fu” in Chinese.

The character “fu” is posted by virtually all Chinese people on the doors of their homes during the Spring Festival (closely associated with the Chinese New Year).

One tradition from the Zhou Dynasty (beginning in 256 B.C.) holds that putting a fu symbol on your front door will keep the goddess of poverty away.

福 literally means good fortune, prosperity, blessed, blessedness, happiness, and fulfillment.

You'll also see this character in Vietnam (where Chinese characters were the written form until a romanization reform) where it is pronounced Phúc - a word commonly used in Vietnamese names because of its good meaning.

See Also:  Lucky