Name: Wu Fang Qi (Hokkien: Ghor Hong Ki), English translation: Five Directional Flags

Usage: These flags are used to represent the 5 Directional Armies from Heaven, Hell and Mortal World.

Such flags are made in 5 colours to represent the 5 directions:

1 Green - East - Represent Element for Wood
2 Red - South - Present Element for Fire
3 Yellow - Central - Present Element for Gold
4 White - West - Present Element for Earth
5 Black - North - Present Element for Water

Usually you can see temples placing these 5 flags around their temples, this is to represent that the 5 Directional Armies are here to protect the temples from other evil energy from entering the place.