Why do people call beautiful women "the son of the master" or "the daughter of the master"?

Song Yu, a disciple, was a writer of Chu at the end of the Warring States Period. In the era of Chu Huaiwang and King Xiang of Chu, he served as a "literary attendant" and was said to be a student of Qu Yuan. Song Yu is not only excellent in writing, but also handsome in appearance. At that time, the doctor and apprentice once called him "lewd" in front of King Xiang of Chu, and King Xiang of Chu called Song Yu for questioning. The beauty of the world is like Chu, the beauty of Chu is like Chen Li, and the beauty of Chen Li is like the son of Chen's master. For the owner's son, adding one point is too long and reducing one point is too short; Powder is too white, Zhu Taihong; Eyebrows are like jade feathers and muscles are like snow; The waist is like a bundle, and the teeth are like shells; Smile, confuse Yangcheng, charm Cai. However, this woman has been spying on me on the wall for three years and is still not allowed. There is nothing more beautiful than Chu, and the beautiful mother of Chu is the best in my hometown. The most outstanding beauty in my hometown is a girl in my east neighborhood. This girl is of moderate figure, neither tall nor short, and her face is naturally beautiful. She doesn't need powder and rouge. Eyebrows, skin, waist and teeth look good. When she smiles, that kind of beauty is even more indescribable. It would be strange if Yangcheng and Cai Xia were not fascinated by those playboys! However, this "master's daughter" often climbs up the wall to peek at me. It's been three years, and I haven't accepted her visit. Then when it comes to the apprentice, the general idea is: "As for the apprentice doctor, it is completely different from me. His wife's hair is messy, her ears are askew, her lips are cracked, her teeth are missing, she walks with a limp waist and a scab all over, and she suffers from severe hemorrhoids. Dr. Deng Tu likes her very much and gave birth to five children with her. " Finally, Song Yu asked King Xiang of Chu: "Look, who is horny? Isn't this obvious? " Hearing this, Wang Xiang felt that it seemed reasonable, so forget it. Because of this article, people regard the lothario as the representative of the lecherous, and call the lecherous "lothario". Because of this article, people call beauty "the son of the master" or "the daughter of the master". Some people call beautiful women "neighbors to the east", such as Li Bai's poem in the Tang Dynasty: "Beauty has existed since ancient times, and beauty is adjacent to the east".