Water chestnut is a shallow-water perennial herb in the Cyperaceae family, and its bulbs are used as vegetables. It was called Fucui in ancient times, commonly known as horseshoe, and also known as ground chestnut. It got its name because it is shaped like a horseshoe and resembles a chestnut. Calling it horseshoe only refers to its appearance; saying it resembles a chestnut means not only its shape, but also its nature, flavor, ingredients, and functions. Also, because it bears fruit in mud, it is also called ground chestnut. Water chestnuts have purple-black skin, white meat, sweet and juicy taste, crisp and delicious. They have been known as underground snow pears since ancient times, and northerners regard them as Jiangnan ginseng. Water chestnuts can be both a fruit and a vegetable, and are a popular seasonal product.