The upper part is concave and convex, and the lower part is uneven.

The upper part is concave and convex, and the lower part is bumpy. The details are as follows:

1. Symmetry in form

1. Concave-convex and bumpy: both of these words indicate some kind of uneven state in Chinese. Concave-convex emphasizes the ups and downs of the surface, while bumpy emphasizes the rugged road or terrain. Their meanings echo each other, expressing a state of hard walking.

2. Unevenness and difficulty in walking: both of these words express difficulty in action. Unevenness means undulating terrain, while difficulty in walking means difficulty in walking. They form the last word of the couplet, forming rhyme and antithesis.

Second, the relevance in meaning

1. Image description: The couplets vividly describe a rugged terrain or road through the words concave and convex and bumpy. Together, they create a visual effect that enables people to imagine such a scene.

2. Emotional expression: This couplet also expresses an emotional implication. Bumps and bumps not only represent the rugged terrain, but also symbolize the twists and turns and difficulties of life. Through these two words, couplets convey a kind of courage and determination to face difficulties and challenges.

Third, the deep meaning of couplets

1. Philosophy of life: This couplet not only expresses the rugged terrain or road on the surface, but also reflects the difficulty of life and the courage and determination needed in the face of difficulties and challenges. This moral embodies the positive and indomitable spirit in China traditional culture.

2. Cultural background: This pair of couplets fully embodies the characteristics of China culture. It uses refined and concise language and expresses profound philosophy and thoughts through rhetorical devices such as comparison and symbol. At the same time, it is also an indispensable part of China's traditional culture, reflecting the wisdom and feelings of the people of China.

related knowledge of couplets

1. The antithesis is neat: the upper and lower couplets of couplets need to be neat, that is, the corresponding words or phrases should have the same or similar parts of speech or semantics. For example, in the "Horseshoe Disease with Spring Breeze" in the first part of the book, "Spring Breeze" and "Horseshoe" are nouns, and "Pride" and "Disease" are verbs, forming a symmetrical sentence pattern. The bottom link also needs similar symmetry.

2. Meaning relevance and cultural background: The meanings of couplets should be relevant, not completely irrelevant or irrelevant. For example, the first part describes the scene of spring, and the second part should also be related to spring, not to summer or autumn. As an important part of China traditional culture, couplets are closely related to ancient poetry, calligraphy and other art forms. Couplets reflect the cultural characteristics and values of China.

3. Refinement and implication: The sentences of couplets should be refined, concise, profound and implicit. Good couplets often fable the profound philosophy of life or cultural connotation, which is expressed through concise words and leaves a deep impression on people.

4. Unique form: The form of couplets is unique, the number of words in the upper and lower couplets is generally equal, and the types of words or phrases should be the same or similar. The length of couplets is generally short, but there are also some long couplets, such as the famous "Daguanlou Long Couplet".

5. Wide application: Couplets are widely used in various occasions, such as Spring Festival, Mid-Autumn Festival, wedding and birthday. Couplets can also be used to decorate walls, lintels, etc., as a cultural ornament.