Eleocharis tuberosa is also ranked as Cucurbita (common name), Paeonia lactiflora, Fructus Aurantii, Eleocharis tuberosa, Eleocharis tuberosa and Eleocharis tuberosa. It is a shallow perennial herb of Eleocharis in Cyperaceae, and its bulbs are used as vegetables.

In ancient times, it was called fumi (fumi), commonly known as horseshoe, also known as chestnut, which was named after its shape like horseshoe and chestnut.

Calling it a horseshoe only refers to its appearance; It is like a chestnut, not only in shape, but also in taste, composition and function. Because it bears fruit in the mud, it is called a chestnut.

The skin of water chestnut is purple-black, and the meat is white. It tastes sweet and juicy, crisp and delicious. Since ancient times, it has the reputation of underground Sydney, and northerners regard it as Jiangnan ginseng. It is called "Qian Cong" in Chaoshan area because it looks like ancient coins and onions. Water chestnut is both a fruit and a vegetable, and it is a popular seasonal product.