The ideograph Oracle Bone Inscriptions describes the shape of Chinese characters when he created them. The "cloud" in the words 1 and 2 is composed of two horizontal lines and a curled cloud, the upper horizontal line represents the sky, and the lower part of the "cloud" in the bronze inscription turns to curl to the right. During the Warring States period, seal script was standardized as two characters. An additional symbol "rain" as "cloud" changed from rain to cloud, and cloud also represented sound and became pictophonetic characters, and now it is simplified as "cloud"; One is to keep the original font unchanged. Official script uses the writing method of seal script, which turns cirrus into a horizontal pen and a vertical pen.

The original meaning is cloud. Shuowen: "Clouds and mountains are also full of gas." "Poem Xiaoya Hundred Flowers": "Ying Ying Baiyun, dew grass." There are many metaphors of clouds. Jia Yi's On Qin: "The world gathers and responds." In ancient Chinese, the word "cloud" is called "Yue", and The Analects of Confucius Zi Han says: "I'm afraid, like an abyss, walking on thin ice."

Under the guise of "such as" and "such", Zuo Zhuan's Twenty-eight Years of Xianggong: "Cloud, how to use the alliance." In ancient times, simplified Chinese characters and traditional Chinese characters had their own division of labor, and the "cloud" of simplified Chinese characters was only used as a false meaning; The traditional "cloud" as the original meaning. Both of them are ancient and modern characters, and they are also simplified as clouds in regular script.

Rhyme (pinyin: yún) is a first-class Chinese character (commonly used word) with general specifications. , the word was first seen in Oracle Bone Inscriptions, and its ancient glyph is like a cloud. The original meaning refers to a large number of water droplets, ice crystals or visible polymers composed of them suspended in the air, and then it has a rich meaning. Later, under the guise of saying equivalence.