Like Zhu Bao, sheepskin stone is also called Bao Yang. "Baoyang is a stone of sheep, which is condensed from indigestion and food residue, and has high medicinal value and collection value." Jiaozhou city Forestry Bureau wildlife protection station engineer Chi said that Bao Yang is a stone in sheep bile, bile duct, liver duct and other organs. It is also a rare and scarce Chinese herbal medicine, and its medicinal effect is similar to that of bezoar, pig sand and donkey treasure.

Sheep stones, also known as sheep yellow and sheep jujube, are gallstones of goats and can be used to replace bezoar. It has the functions of purging heat, inducing resuscitation and relieving convulsion. It is a valuable Chinese herbal medicine, and its value per kilogram is about 12- 15000 yuan.