The answer is .. adding an idea.
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In Chinese poetry, a couplet (simplified Chinese: 对联; traditional Chinese: 對聯; pinyin: About this sound duìlián) is a pair of lines of poetry which adhere to certain rules (see below). Outside of poems, they are usually seen on the sides of doors leading to people's homes or as hanging scrolls in an interior. Although often called antithetical couplet, they can better be described as a written form of counterpoint. The two lines have a one-to-one correspondence in their metrical length, and each pair of characters must have certain corresponding properties. A couplet is ideally profound yet concise, using one character per word in the style of Classical Chinese. A special, widely seen type of couplet is the spring couplet (simplified Chinese: 春联; traditional Chinese: 春聯; pinyin: chūnlián), used as a New Year's decoration that expresses happiness and hopeful thoughts for the coming year.
A. Mine
Mine is a possesive pronoun, as it shows ownership.
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