Faith can be expressed in many different ways depending on the type of religion.
Religions use variety of symbolisms to represent their faith. One of the ancient but still being used material today for religious purpose are the faith flags. It is classic, simple yet effective material used to represent a faith through its designs of religious symbolisms. During the time wherein people actively spread and preach their religions, they use faith flags in their missions and crusades in order to be recognised. This encouraged curiosity for some who were non-believers of certain religions. This also became significant and effective material to spread religion in the whole world.
Buddhism is one of the popular religions that widely use faith flags. Their flags are commonly seen in the places of China and India. Their designs can vary depending on the place the flag. This is because history and culture of places have strong influence on the designs in order that citizens may be able to relate better and incorporate it in their daily lives. Some designs are simple with just the image of Buddha; some have other additional symbols and texts with it. Importantly, designs are made to be a constant reminder to what they believe in.
However, a faith flag of Buddhism are not just used and waved for decoration purposes in monasteries and homes. Some believe that when these flags are waved the wind naturally carries prayers and mantras all around the place; thus brings out good luck and prosperity. Know about these on the internet and books.