Lilac, also known as Que Su, Xiong Que Shi, Qing Dan, and Ma Que Fen, is mentioned in the book "Lei Gong Pao Zhi Lun". It is the droppings of the bird species Passer montanus (Linnaeus) in the family Passeridae. It can be collected throughout the year and should be cleaned of soil or impurities and dried in the sun.
【Processing Method】"Lei Gong Pao Zhi Lun": "When collecting, remove the sides first, and do not use those with attached Aconitum. Then grind it into powder in a bowl, soak it in licorice soup overnight, pour off the clear licorice water, and dry it for use." "Qian Jin Yi Fang": "Grind." "Tai Ping Sheng Hui Fang": "Pound it into powder." "Sheng Ji Zong Lu": "Fry and finely grind." "Pu Ji Fang": "Grind it finely if it is straight." Currently, the original medicinal material is taken and impurities are removed.
【Appearance of the medicinal material】It is cylindrical, sometimes slightly curved. The surface is grayish-white or grayish-brown. It is slightly hard and easily breaks. The cross-section is brown and granular. It has a slight fishy odor.
【Effect of processing】Lilac has a bitter and warm taste. It enters the liver and kidney meridians. It has the function of resolving accumulation and dissipating opacity. Processing it makes the medicinal material clean, which is beneficial for formulation and preparation. It is used for hernia and masses.