Spinal cord jǐ suǐ Interpretation: A part of the central nervous system of humans and cristae animals. In the crista, many pairs of nerves are divided into different parts of trunk and limbs on both sides.
Interpretation of pen pith bǐ suǐ: refers to the essence of calligraphy.
Interpretation of washing marrow xǐ suǐ: Taoism says that monks wash away all marrow and replace it with fairy bones.
Interpretation of brain marrow nǐ o su ǐ: the general term for brain, midbrain, cerebellum and medulla oblongata.
Essence jρng suǐ Interpretation: essence and essence. Metaphor is the essence of things.