Bai Qian belongs to the warming cold phlegm medicine, long in expectoration. But whether it is cold is hot, external internal injuries, new cough for a long time are available, especially phlegm or cold phlegm blocking the lung, lung Qi loss of descending is appropriate. The “Compendium of Materia Medica” records: “white before, to protect the lung gas, cough treatment more use. With the warmth of the medicine is particularly good.” And about the white before treating lung gas cold phlegm cough, there is a legendary story with the divine doctor Hua Tuo. Hua Tuo rainy night looking for white front About the origin of white front, it is said that and Hua Tuo related. One year, Hua Tuo was practicing medicine in Henan Province, and on a night when it was raining heavily, Hua Tuo was staying at a small store in Baijiazhuang. In the middle of the night, he was awakened by the sound of a child crying. He listened carefully and saw that the child was coughing. Hua Tuo said to the shopkeeper, “Whose child is this crying?” “It’s the child of the family who lives behind the store.” The shopkeeper replied. Hua Tuo said, “I’m a doctor. I’m afraid this child is very sick and will not survive until noon tomorrow.” When the shopkeeper heard that he was a doctor, he hastily led Hua Tuo to the back of the store, knocked on the door of a family, and said, “A doctor is here to treat your child. The family hurriedly invited Hua Tuo into the house. Hua Tuo looked, smelled and examined the child, and then said, “To save the child’s life, we need a herb. If you find it right away and take it in time, the child will be able to turn his life around. The child’s father said with difficulty, “What kind of medicine do I have to take? Hua Tuo said, “Light a lantern and I will go and look for it. The boy’s father went ahead with the lantern, and as the rain became heavier and heavier, Hua Tuo searched everywhere in the front and back of the village. Finally, he found it on the slope of a small river ditch in front of the inn. So Hua Tuo dug it back, cut off the root, washed it with water, and had it decocted for the child to drink, and left the leaves of that herb for a sample. The people urged the kind-hearted Hua Tuo to go and rest, and did not ask the name of this herb. The next day, the father of the sick child prepared a gift and came to the inn to thank the doctor. Unexpectedly, the owner told him that “the doctor had left before dawn.” “Oh, I haven’t thanked him properly! Nor did I ask his name”. “Do you know who he is”? “Who?” “Hua Tuo”. “Oh, no wonder he has such high medical skills and a good heart, I bet he is a living god”. So, the father dug up some herbs and gave them to the child to drink, according to the leaves left by Hua Tuo. Since then, the people of Baijiazhuang also recognized the herb to stop coughing; however, they did not know its name. Later, we thought: this herb for the first time is dug in front of the white boss, it gave it a name, called “white before”, so, white before the name of this Chinese medicine used to this day. The source and role of white before Source: This product is the dried rhizome and roots of the willow-leaved white before or coriander-leaved white before of the family Lauraceae. Harvested in autumn, washed and dried in the sun. Origin: Zhejiang, Jiangsu, Anhui, Jiangxi, Hunan, Hubei, Guangxi, Guangdong, Guizhou, Yunnan, Sichuan and other places. Taste: Pungent, sweet, slightly warm; belongs to the lung meridian. Effects: Eliminating the lung and lowering the Qi, lowering phlegm and stopping coughing. Usage and dosage: for internal use: 3-10g in decoction. Note on use The Classic of the Materia Medica: “Where coughing reverses the upper qi, coughing qi reversal, due to qi deficiency qi does not return to the element, but not due to the lung qi due to the congestion of the evil guest is prohibited.” White before taking the “Compendium of Materia Medica” records: “white before white color and taste slightly pungent sweet, hand Taiyin medicine also. Long in the lowering of Qi, lung gas congestion and phlegm is appropriate.” Therefore, Bai Qian can treat: 1, cough and phlegm of lung gas congestion 2, gas and asthma 3, stomach and epigastric pain 4, children noma 5, bruises and injuries