This is a famous sentence in Wang Anshi's Sailing in Guazhou, one of the eight masters in Tang and Song Dynasties. A word "green" has been revised and scrutinized several times, from "to"-"to"-"to", and finally it is designated as "green". The word "green" is vivid and has a high artistic conception. Indeed, the spring in Jiangnan is beautiful and green at the same time. In this green background, everything on the earth is colorful and full of vitality.
The word "green" in the poem is skillfully used and widely praised. According to the records of Hong Mai in the Southern Song Dynasty, Wang Anshi used more than ten words such as "Yao", "Yao", "Yao" and "Yao Man", and finally it must be "Qing". This is the most famous story of refined words in poetry. The advantage of the word "green" is that it has the action meaning of other words and has a distinct visual effect on spring scenery.