If you look at the leaves of plants carefully, it should be crow onion, crow onion, also known as "Luo Luo onion, Gu Luo onion, rabbit milk, pen container grass, Lao Guan pen". Compositae, scorpion, perennial herb, 10-20cm high, glabrous plants. Roots are stout and erect, often branched at the root neck to form underground erect or inclined rhizomes, branched or unbranched, surrounded by dark brown petioles, forming coarse fibers. Stems solitary or clustered, erect or decumbent. Distributed in North China and East China.