What are the comparative techniques of the book of songs "Meng" and what is the simple evaluation function?

The performance of contrast is due to the reflection of realistic contradictions in people's minds. There are two forms: 1. Syntactic contrast, such as "women are unhappy, scholars do their best"; "The scholar's sorrow is fair to say; Women are embarrassed and can't say it. " This is the contrast between scholars and women. The contrast between Mulberry Not Falling and Mulberry Already Falling, and the contrast between Not Seeing Re-entry and Seeing Re-entry are all against each other, which is more effective in shaping images and expressing feelings. 2. Before and after the comparison, such as Meng, before marriage is a "laughing oath"; After marriage, "whatever you say and do, as for violence." Different attitudes set off each other, depicting the essence of hypocrisy.