In fact, there are differences in understanding these two sentences or this poem. Preface to Mao's Poems thinks that this poem is a tribute to "the virtue of empresses", and that women can only be worthy of princes if they are loyal, filial and restrained. However, both Lu's poems and Han's poems think that Guan Ju is a thorn poem, satirizing the lust tendency of the monarch, and some scholars think that it is a love poem. In view of the vulgarity of "My Fair Lady, Gentleman", their views are more inclined to Lu and Han Shi.
Now people have such extreme views, largely because people have different definitions and views on the so-called "gentleman" and "lady". In some aestheticism and idealism, or people who have always believed in beauty, they will not think that the sentence "My Fair Lady, Gentleman is Good" is vulgar. On the contrary, those who have extreme definitions of gentlemen and ladies agree to be vulgar.
Those careless "women men" are very popular now. On the contrary, the image of a lady, which was widely circulated in ancient times and praised by the world, is now unpopular. At that time, people thought that girls should always keep a lady's posture and show their temperament. Even if their family background is not excellent enough, such people will be pursued by gentlemen and good people. However, there are very few people who can keep a lady's posture now. However, even so, how can there be a saying that "my fair lady, a gentleman is gentle and graceful" will become vulgar in the eyes of today?
A large part of the reason lies in people's disguise, which may show a lady's posture on the surface. In fact, her heart is not as beautiful, broad-minded, modest and friendly as a lady. The so-called gentleman is not as knowledgeable as the ancient modest gentleman. He is modest and friendly and knows how to cherish jade. On the contrary, he is the kind of person with a heart and indecent behavior. Therefore, such a pursuit process is not valued by people today, which explains why "my fair lady, a gentleman is good" has become vulgar in the eyes of people today.