In ancient times, the word "Sun Buffalo, Niu Mujing, Fish, Tianshan Moon" was replaced by painting. How to explain the origin and significance of painting?

Water (hieroglyphs. Oracle Bone Inscriptions glyph. The middle is like a water vein, and the sides are like running water. "Water" is the radical of Chinese characters. From the word water, it refers to the name of a river or water conservancy, or the direction of water flow, or the nature and state of water. Cattle pictogram. The shape of Oracle Bone Inscriptions is "true". The middle vertical line represents the cow's face, the upper two vertical lines add corners, and the lower two small tails represent the cow's ears. Oracle Bone Inscriptions is like a sheep's head. "Sheep" is the radical of Chinese characters. Original meaning: mammal)

Yeah, hieroglyphics. It looks like a wellhead, and the middle point indicates that there is water in the well. Original meaning: um) wood (pictographic). Oracle Bone Inscriptions glyph. Like a tree. Branches and leaves above and roots below. "Mu" is the radical of Chinese characters. The word "wood" indicates the name of a tree or wood. Original meaning: tree)

Fish (pictographic. Oracle Bone Inscriptions-shaped like a fish. Original meaning: aquatic vertebrate)

Cold-blooded vertebrates whose heads are completely aquatic and breathe in water, including round-billed, plate-gill and high-gill aquatic vertebrates with cartilage or hard bones.

Fish, water worms. Hieroglyphics. The fishtail is similar to dovetail joint. -Shuo Wenshan

(pictographic. The inscriptions on Oracle Bone Inscriptions and inscriptions on inscriptions on inscriptions on inscriptions on inscriptions on inscriptions on inscriptions on inscriptions on inscriptions on inscriptions on inscriptions on inscriptions on inscriptions on inscriptions on inscriptions, like the shape of juxtaposed peaks. "Mountain" is the radical of Chinese characters. Original meaning: the raised parts and stones on the ground)

Days (hieroglyphics. Xiao Zhuan thinks it is like a farmland with criss-crossing buildings or ditches. "Tian" is the radical of Chinese characters, and the characters from "Tian" are mostly related to hunting and farming. Original meaning: farming) moon (pictographic). Oracle Bone Inscriptions glyph. Like half a moon. "Yue" is one of the radicals of Chinese characters. Original meaning: the moon)