When it comes to the "treasures" in the intestines and stomach of animals, people are generally familiar with Niuhuang, Goubao and Ma Bao, which are also called the three treasures of traditional Chinese medicine. Calculus bovis is a gallstone of cattle or buffalo. Dog treasure is the stomach stone of canines; Ma Bao is a stone in the gastrointestinal tract of a sick horse. It is understood that because these three treasures are relatively rare, the prices on the market are also rising all the way. For example, the price of natural bezoar is several thousand yuan per gram. If the individual is large and the color is good, the price will be ten thousand yuan. But recently, a small balance treasure has become a bright spot in the collection world.

Yu Bao, commonly known as fish bite, is rarely noticed. It is indeed an important medicinal material that is not commonly used. This is a stone in a fish's stomach.

Because ordinary fish rarely appear in Yu 'ebao. It often appears in large underwater creatures such as sharks and whales. It is extremely difficult to see, which will lead to its exclusion from commonly used medicinal materials.