Dragon liver and phoenix marrow, which means extremely rare and precious food, comes from Biography of Jiang Yaozhu: Fang is the treasure on the table and has a pleasant flavor. Although the dragon liver and phoenix marrow, there are not as good as theirs.

Obviously, Su Shi used dragon liver and phoenix marrow to describe top food, because there is no dragon liver and phoenix marrow in the world. Thus, since the Song Dynasty, Ganlong cuisine has become a representative of food.

Xie Zhao also mentioned it in Five Miscellanies in the late Ming Dynasty. Dragon liver and phoenix marrow, leopard embryo chest, rare in the world, are just fables. Red-lipped badger, like a hump, is delicious, although occasionally. Obviously, delicacies such as dragon liver and phoenix marrow, leopard fetus and unicorn meat do not exist in the world, and they are all borrowed words. Even the scarlet lip hump exists in the world, but it is not used for food. It is because there is no, so I feel precious.