In the 2022 Spring Festival Gala, the dance "only green" which was born from the painting of thousands of miles of rivers and mountains is very moving. The high-level aesthetic feeling of traditional culture conveyed by green has fascinated hundreds of millions of audiences. If you ask, what is the relationship between green and green? What is the color of green? It is estimated that most people can not answer. Bao Yan's "a brief history of Qingse Ji" can just answer questions. Bao Yan is the vice president of the Chinese Poetry Society and the chief planner of "poetry China", with unique views on classical culture. "Studying cyan, a color with unique characteristics in China, is conducive to finding the important relationship between this color and Chinese traditional national psychology, and is conducive to deeply understanding China's cultural tradition". The brief history of cyan is a window for us to appreciate the charm of Chinese culture. What color is cyan? What color is cyan? In history, no authoritative person has ever specified or specified what color is cyan. It is a collective name of a group of colors that are expanding or contracting with the development of history. Mr. Ge Zhaoguang once said: "Chinese culture constructs a cultural China. There is an inherent tradition in this culture, which makes Chinese people have different values, living habits and spiritual temperament from other people." The same is true of cyan culture. The ancient "green" covers black, green and blue, and was once recognized as blue in modern times. A large number of poems, paintings, literary works, and costumes come and go in and out of its territory, like a thousand rays of light, unpredictable. From this, we can conclude that "cyan" is a kind of virtual color in the cultural sense and a microcosm of Chinese culture. From prehistory to the Shang Dynasty, the ancients did not express the concept of "green and green" for thousands of years. Although there were cyan pigment powder in the Yin Ruins, the word "Qing" did not appear in the oracle bone inscriptions. It was not until the inscriptions of the Western Zhou Dynasty that it was found. In the spring and Autumn period, the word "green" began to appear in a large number of documents such as the Analects of Confucius and the book of history, and the meaning began to be diversified. Green, blue, black or other dark colors can be called cyan. The cyan family has many members. According to Shuowen Jiezi, Erya, Guangya and other ancient books, Bao Yan summarized the explanation of terms related to cyan. There are 13 categories, including green, blue, green, yellow, lead, purple, cyan, blue, green, green, green, green, green, green and green. Most of them are derived from jade, stone, silk, plants or birds. They are full of ancient wisdom and scientific in details. For example, "the silk is blue and white", which means that the color of the silk fabric is pale blue and white. There is a sentence in Zhu Yuansi's book that "the water is blue and the bottom is seen from a thousand feet", which is very vivid; Another example is "lead". The ancients thought that lead was gray cyan, so they called gray cyan objects lead color; "Cyan" and "cyan" are black and red silk fabrics. Wang Niansun's Guangya Shuzheng discriminates that "cyan and cyan are both dark cyan, and cyan is deeper than cyan", and the latter is deeper than the former; "Mi" is similar to "cong". According to Duan Yucai's annotation of Shuowen Jiezi, "Cong is also mi, which means its color is green. Cong is light green". MI was originally a light green silk fabric with light yellow patterns, which was also extended to describe the color of cyan objects. Now, except for the commonly used word "cyanosis" in medicine, there are basically no application scenarios for cyanosis, cyanosis, cyanosis, cyanosis and onion. “