In Feng Shui, Bat is commonly used as a wealth cure because it has the same word/pronunciation ("Fu/Fook") as Prosperity in Chinese & Cantonese. It also represents happiness and longevity making it a very popular auspicious symbol in the Chinese culture.
A pair of bats represents Double Happiness and a group of five bats represent 'Five Blessings' (wufu 五福): long life, wealth, health, love of virtue and a peaceful death. While a bat with peaches symbolises a healthy and happy life.
Excellent for people seeking a prosperous and healthy life.