Fan-shaped object called "wa" in Japanese was grouped by size, large "wa" and small "wa," latter of which was used for more practical purposes such as for knocking down harmful insects like fly and mosquito.
大型の翳（は）に比して実用的な小型の翳と区別され、それを用いて害（ハエや蚊などの虫）を打ち払う。