Why are all the picture books of ancient ladies in China with single eyelids?

Because for the aesthetics at that time, it was the beauty of cherry with small mouth and single eyelids.

Before Qin and Han Dynasties, the so-called Han people were all Mongols. Single eyelid and upturned phoenix eye are the appearance characteristics of Mongols. Because Mongolians have more fat on the upper eyelid, they will droop downward to cover the upper eyelid and look like a single eyelid.

However, since the Jin Dynasty, many nomads from the north invaded the south, and a large part of them were assimilated by the Han nationality, while some from the south were assimilated by the Han nationality, forming a great ethnic integration, so double eyelids appeared. The Hu people described in the prosperous Tang Dynasty all have thick eyebrows, which shows that they actually have double eyelids at this time. In the Song Dynasty, ethnic integration happened again, and many paintings in the Song Dynasty were realistic. At this time, we can find the existence of double eyelids in portraits.

But the picture of a lady is often not a realistic portrait, but a projection of the painter's inner beauty. In the traditional aesthetic view at that time, the beauty with a single eyelid was the real beauty, which was the traditional image of beauty. There was no need to draw the existing double eyelids at that time. Before the Republic of China, slender phoenix eyes and single eyelids have always been the characteristics of beautiful women. It was not until after the Republic of China that the beauty with big eyes and double eyelids evolved into a generally accepted beauty image.

Moreover, from the ancient aesthetic point of view, the hot and sexy figure is not respected, but the weakness under the cover of taking off the coat and big sleeves is regarded as beauty. Since a painter wants to express beauty, he must draw according to China's traditional standard of looking at beauty, so the fragile and graceful beauty with a single eyelid and a phoenix eye has become a common beauty image in painting.

Judging whether a person looks good from ancient aesthetics usually depends on whether his skin is fair, whether his figure is tall, whether his eyes are black and bright, whether he looks good, and other things. This is a good-looking man.