Lichuan water shield refers to the water shield produced in the administrative area of ????Lichuan City, Hubei Province. Water shield is a precious aquatic vegetable. Water shield has a smooth texture that is unparalleled by any other vegetable. At the same time, the glucomannan contained in the gelatin of water shield does have certain anti-cancer effects. Lichuan water shield, due to its unique growth environment, is superior to products from other producing areas in terms of taste and gum content. In 2004, it was designated as a geographical indication product and protected by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China.