The prototype of Lin Daiyu is actually a woman named Joo Sang wook, who was originally a servant girl of the author Cao Xueqin's family. She grew up with Cao Xueqin and had a good impression on him, but Cao Xueqin secretly loved Li Xiangyu, the daughter of a relative. The relationship between them is like Jia Baoyu, Lin Daiyu and Xue Baochai in A Dream of Red Mansions written by Cao Xueqin. This is how the love triangle was born.

When Li Xiangyu reached a certain age, Cao Xueqin didn't want to take part in the palace draft. She begged her mother to find a way to finally let Joo Sang wook replace Li Xiangyu. Fortunately, Joo Sang wook was chosen and Yongzheng loved her very much. Naturally, Cao Xueqin married Li Xiangyu, and the days passed. Yongzheng died young, and Joo Sang wook and other concubines were also killed.

At this time, great changes have taken place in Cao Xueqin's family. Cao Cao's family, which was originally extremely rich, suddenly went into decline, but Joo Sang wook never left after knowing it. He secretly helped Cao Xueqin a lot, and after a long time, he was known by Emperor Qianlong. In a rage, Cao Cao was ordered to copy the door, and Joo Sang wook also felt that he had brought trouble to Cao Cao and committed suicide with a guilty conscience.

This is one of the reasons why A Dream of Red Mansions was banned. What Cao Xueqin created in such an environment involves a lot of content. At that time, Qianlong refused to let A Dream of Red Mansions be published, but fortunately it was not destroyed, otherwise the masterpiece would have fallen.

Besides, Joo Sang wook is an admirable woman. She was forced to leave her beloved man, but she still helped the Cao family by letting bygones be bygones. Few people can match this feeling. It can be said that without her, Cao Xueqin would not have created the great masterpiece A Dream of Red Mansions. Lin Daiyu, who takes her as the prototype, is also loved by the world, but things have changed and life has been bumpy.