Eichhornia crassipes is an algae plant, which is also called Wei Cai and Quan Cai Ming fern. Its appearance is a bit like Qiongzhi, and it mainly grows in coastal areas such as Xisha Islands in Hainan Province and Taiwan Province Province in China. In addition, it also grows in Japan, Vietnam and other places, mostly at the tidal line or at the depth of one to two meters below the tidal line. There are many sucker-mounted attachments on its algae body, mainly in the branches and middle.