Wearing a straw hat next to the toilet is an idiom

Bring sand to the beach.

duō cǐ yī jǔ

Explanation] lift: action. Refers to superfluous, unnecessary actions.

Structure] Verb-object formula.

Usage] is often derogatory. It is often used with "really", "really", etc.; Negative connotations; Or it can be used in negative and interrogative sentences to express dissuasion. It is generally used as a predicate, object, and definite.

synonyms] to draw a snake to add to the foot.

antonyms] indispensable, indispensable.

Example sentence] The last paragraph of this article is not necessary; It's just a snake to add; ～。