Ma Bao, Hebei

Produced in Kangbao, Hebei. Its shape is oval. Spherical or oblate, with different sizes; Egg blue or oil brown, grayish white, smooth and shiny, often accompanied by messy pinstripes; The profile is gray, with concentric layers, odorless, and can be chewed into fine powder. It is better to be solid, large, heavy, gray, smooth and layered. Contains calcium carbonate, magnesium phosphate, magnesium carbonate, etc. It tastes sweet and salty, cold in nature and slightly bitter. It has the effects of calming and resolving phlegm, clearing away heat and toxic materials and calming the nerves. Indications: madness, malignant sores and toxic swelling.
Reprinted with attribution： https://cnlocality.com/(Chinese Specialty Products)