How to treat the marriage and love culture reflected in Peacock Flying Southeast, The Book of Songs Mulberry, The Book of Songs General and Hairpin Phoenix?

(1) It is a common artistic technique in folk songs to praise Liu Lanzhi's diligence and cleverness repeatedly through Liu Lanzhi himself and Liu Lanzhi's mother.

(2) In the last paragraph of the poem, pine, cypress and sycamore are used, with branches and leaves connected, mandarin ducks facing each other and singing at dusk, which symbolizes the immortal love of Jiao Zhongqing and his wife and their pursuit of an ideal life, which is also a common way of dealing with folk literature.

(3) After the Wei and Jin Dynasties, the stories of double suicide between husband and wife are common, such as Han Ping and Liang Zhu merging into butterflies, which are widely circulated, but in poetry, the peacock flying southeast is the earliest.