Why is it said that "The Book of Songs·Guan Ju" is a model of the virtues of a couple?

This poem can be regarded as a model of the virtues of a couple, mainly due to these characteristics: First, the love it writes about has a clear purpose of marriage from the beginning, and ultimately comes down to marriage. The happiness of love is not a brief encounter or a momentary passion between young men and women. This kind of love that clearly points to marriage and expresses responsibility is more recognized by society.

Secondly, the men and women it writes about are "gentleman" and "lady", indicating that this is a union associated with virtue. "Gentleman" has dual meanings of status and virtue, while "fair lady" also means both physical beauty and good moral conduct. The combination of "gentleman" and "lady" here represents an ideal of marriage.

Extended information:

The ancient Confucians valued the virtues of husband and wife, and there was a profound reason for this. In the first sense, family is the basic unit of social organization. In ancient times, the harmony and stability of this basic unit was of great significance to the harmony and stability of the entire social order. In the second sense, the so-called "virtue of husband and wife" actually refers to all aspects related to issues between men and women.

Confucius also knew that this is a basic requirement for human survival. The desire to eat is relatively simple (of course, you must have food first), but the emotional activities caused by the desire of men and women are much more complex, active, and intense, and its potential dangers to living standards and social order are also much greater. Confucius also lamented :

So all restraint and all cultivation must first start with the desire of men and women. This is of course necessary, but how much restraint is appropriate is a complex issue, which involves a combination of social material production levels, political structure, cultural traditions and other factors, as well as changes in the conditions of the times.