"On paper" means on paper. Metaphor is empty talk, which can't solve practical problems. It is also a metaphor that empty talk cannot become a reality. Do everything yourself and never make a military paper-an armchair strategist. An armchair strategist is an unrealistic story of Zhao Kuo in the Spring and Autumn Period and the Warring States Period.

According to Records of Historical Records, Biography of Lian Po and Lin Xiangru, Zhao Kuo, the son of Zhao She, a famous soldier of Zhao in the Warring States Period, studied the art of war when he was young, but his father could not beat him in military affairs. Later, he succeeded Lian Po as Zhao Jiang in the Battle of Changping. Only know according to the art of war, do not know the flexibility, the result was defeated by Qin Jun. Its usage is formalized; As predicate, object and attribute; With a derogatory connotation.

Historical origin of two-part allegorical sayings

The name "Xiehouyu" first appeared in the Tang Dynasty. The so-called "Wu Hou of Zheng" (a kind of "Hou Hou" poem) has been mentioned in the biography of the old Tang Dynasty. However, as a language form and phenomenon, it appeared as early as the pre-Qin period. For example, "The Warring States Policy Chu Ce IV": "It's not too late to mend." This is the two-part allegorical saying we saw today.

Cihai: Two-part allegorical saying is an idiom. Humorous and vivid sentences, which are familiar to the masses, can be used to hide the following words and indicate them in the previous words, such as just saying "playing chess on the chessboard" to show that it is not the right way; It can also be juxtaposed before and after, such as "Sesame Blossoms Are Rising".