The term, which first appeared in the Chinese classic writing Zhuangzi (Zhuangzi 369 ?-286 BC), means that one can easily see the existence of the Dao with no need to rely on verbal explanation or on logical analysis. Later it was used for literary creations and in the field of connoisseurship. The concept emphasizes the need for one to transcend audio and visual perceptions and logical analysis, and do away with any interfering thoughts or external objects in order to attain true appreciation of art. The concept highlights the importance of seeking intuitive insights unaffected by utilitarian considerations in literature and art. 

Zilu said: “You, Master, have been wanting to see Wenbo Xuezi for a long time. But you did not say a word when you saw him. Why?” Confucius replied: “As soon as I saw him, I realized that he possesses the Dao! So there was no need for me to say anything. ” (Zhuangzi)

If you intend to compose a poem, you should concentrate your mind on it. Fix your eyes on the object which you want to admire in your poem, and appreciate it with your heart. By doing so, you will reach a perfect realm of poetic reflection, as if you have reached the summit of a high mountain, obtained a panoramic view of everything below and gained full command of them. (Wang Changling: Rules of Poetry)