Pu Cai, commonly known as Pu'er Cai, is a traditional Han Chinese dish unique to Huaian. Because it is the stem buds of the root of the fragrant bushes, it is also known as bushy buds and bushy bamboo shoots; The Journey to the West calls it bushy root vegetables, and in ancient books it is called bushy, deep bushy, or bushy jacuzzi. Cattail, a wild aquatic plant, is also known as fragrant cattail. The cattail is tough as silk, that is the old cattail. The first-born cattail stems are tender and edible. Human consumption of cattail has a long history.