|In Chinese poetry, duìlián is a pair of lines that adhere to certain rules. (Although the form is ofter referred to as an antithetical couplet, it might be more appropriate to consider it 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, like tone and pitch. A couplet is ideally profound yet concise, using one character per word in the style of Classical Chinese.
Outside of poems, they are usually seen on the sides of doors leading to people's homes or hanging in an interior as scrolls. A special type of couplet is the spring couplet (chūnlián) used as a New Year's decoration that expresses happiness and hopeful thoughts for the coming year.
First line creates the pattern;
Show out harsh winter's bluster;
When the tiger has withdrawn,
Rabbit retreats, fields lie fallow;
Winter's white blanket gets folded away;
When Snake sheds its skin,
When Sheep comes this way,
Monkey scampers as winter departs;
Aelia lost her four teeth