Wangbuliu is a nickname, which declares that the Chinese name is Mailancai. The name Mai Lanzi originates from the "Compendium of Materia Medica for Famine Relief". It is recorded as Wangbuliuxing in "Famous Doctors". It is also known as Mai Lanzi, Wumu Niu, etc. It is a green plant of the Caryophyllaceae family Mai Lancai. Annual or biennial herb, with standing stems, about fifty centimeters high, light green, with a fork at the top; the main stem is shallow. The leaves are opposite to the body, sessile, ovate-elliptic or ovate-lanceolate, about six centimeters long, light green, with entire edges.

Wangbuliu is a Chinese herbal medicine that promotes blood circulation and unblocks meridians, stimulates milk destruction, reduces swelling and sores. It can be used to treat amenorrhea in women, blocked milk, dystocia in pregnant women, bloody stranguria, carbuncles, and bleeding with Jinchuang medicine. Wangbuliu usually grows in fields or hilly areas around agricultural lands. It likes a warm and humid climate, tolerates low temperatures, drought, and is afraid of waterlogging. The soil quality is not strict, but loose and rich soil is preferred. Low-lying areas are not suitable for planting. Wang Buliu's bee pollen is delicate and exquisite, and it is definitely very fresh, natural and cute. qNvloucai is an annual or biennial woody plant belonging to the genus Caryophyllaceae. The height is generally about 30 to 70 centimeters. It is widely distributed in China and has more and more nicknames. There are more than ten names such as land resource elm, opposite leaf grass, pot flower, etc. The names are different in different places. However, We just need to remember its Chinese name. Because it is a Chinese herbal medicine, the name will be confused in case it is used. It grows and develops in areas ranging from 500 meters to over 1,000 kilometers. It can be seen in grasslands and roadsides. The petals of Nvloucai are milky white.

Wangbuliu is usually planted in the north-central part of Hebei after autumn every year, in fact, in early October. Wangbuliu does not have strict regulations on land resources, and it can grow in any soil layer. Hole sowing is generally used, with a depth of 4 cm. Two kilograms of seeds per mu are used. Three to five seeds are planted in each hole. The row spacing is controlled at 25 cm, and the plant spacing is 20 cm. After planting, fill the soil with water and the seeds will sprout in about 7 days. As Chinese herbal medicine, it is generally not recommended to use chemical pesticides in cultivation. To ensure good efficacy, it is recommended to use retting livestock and poultry manure for fertilization.