Explanation: it is what is written on paper that has not been cashed or cannot be cashed.
Said by: The tenth time of the Popular Romance of the Republic of China with Xu: "The living Buddha Lama is ignorant, and outsiders spread it. Only by the dead letter of Dean Yuan, are you willing to keep it, so quiet?"
Grammar: formal; As subject and object; derogatory sense
Out? place
Qing Li Garbo's "Official Appearance": "What's the export name recently? It is said that money has been raised; Can only handle the affairs of this province; In the future, it will just be a dead letter. "
For example? sentence
We must conscientiously implement the rules and regulations we have formulated and never turn them into ~.