Biography of Huangfugui in the History of the Later Han Dynasty: "The official asked the newspaper to blame him, and the son thought about his father's shame. He took a gallop, walked with food in his arms, made friends with a rich family, and slandered him. Yunchen reported it to the Qiang privately to thank him for his money and goods." Tang Sikong's "The Irony of Cheng Jun": "Then you must be three-harmony and eight-love, and you will be indulged in the giants; In spring, I recite the summer strings, and my service is only for the scorpion. " "The Legend of Yao Gongzi": "Once you enter a rich family, you can't meet each other for life." Lu Xun's "Poems Collected from Outside the Collection": "The lanterns are open to the rich, and the charming girls are strictly dressed to serve the jade bottle." The current news refers to someone marrying into a rich family, but it mainly refers to a particularly rich family.
So, now, the son of a rich man is a boy from a very rich family.