First of all, whether in ancient or modern times, the colors of women's clothing have always been richer and more diverse than those of men's clothing. It is natural for Cao Xueqin to describe women in a dream of red mansions in many details, because women in a dream of red mansions belong to rich people, so their clothes will not be the same as ordinary people's coarse cloth.
Secondly, in those environments in A Dream of Red Mansions, they described women's clothing on a large scale. First, they can reflect their own personality characteristics, which are more prominent and highlight the personality characteristics of this character. For example, when writing about Wang Xifeng's clothes, the art factory writes about the splendor of colorful embroidery, as if it were a fairy princess: wearing a bun of gold silk and eight treasures of beaded embroidery, holding a beaded embroidery pin and hanging it in the morning sun, with a red gold plate. He can write about Wang Xifeng's smart temperament.
Whether this passage is the image of Wang Xifeng's housekeeper alone shows us that her elegant temperament is more in line with his character setting. Cao Xueqin's description of other men's clothes is not particularly detailed. First, because most other men are not protagonists, such as Jia Baoyu, the protagonist, who describes his clothes in great detail. One is Jia Baoyu's noble status, and the other is that Jia Baoyu belongs to the protagonist who wears the whole novel, so he will describe Jia Baoyu's clothes in detail.
However, other men have nothing to pay attention to. For other men, he might as well just brush off their shabby or dignified descriptions, or their temperament descriptions can make readers more intuitive than these clothes descriptions.
Because the main purpose of writing clothes detail description or character appearance description is to reflect this person to readers, so as long as it can achieve its effect, what's wrong with not describing other men's clothes? The last point may be that Cao Xueqin, who originally wrote a bunch of women's stories, put more energy into writing women. The description of these men is definitely only an auxiliary episode, so there is nothing worth writing about clothes for them.