Kou Baimen (1624--? AD) was also one of the eight well-known singsong girls in the Qinhuai river area, i.e., Nanking city and its vicinity. She was born in a strange family, who ran the prostitute business. She was demure and beautiful. In the late spring of 1642 AD, at the age of seventeen, she married the powerful Duke Baoguo of Ming dynasty.
In 1645 AD, the Manchurian army overthrew the Ming dynasty and Duke Baoguo surrendered. Not long after, his family was taken to Peking, which was then the capital of Qing dynasty, founded by the Manchurian (1644—1911 AD). The duke was confined. He wanted to sell all his dancers and maids and singsong girls, including Kou, who was his concubine. But a man could sell his concubine in the feudal China. Kou said to him that if he sold her, he would get at most some hundred taels of silver, but if he could let her go, she would go back to the south and make thousands of taels of silver for him. Therefore, he let her go. She went back to Nanking city. She married a scholar in Yangzhou city, but she felt unhappy with the marriage. So she returned to Nanking city again. Then she liked a scholar Han, who liked her at the first sight and supported her. Then she got sick. One day she still wanted to make love with him, though sick, but he would not allow and leave her room. Later she heard some merry noise next room. When she entered the next room, she found that Han was making love to her maid, who was younger, and beautiful, too, only without fame. She was enraged and her sickness got worse. She died soon.