Refers to Zhuo Wenjun, the daughter of Zhuo Wangsun, the richest man in Shu during the reign of Emperor Wu of Han Dynasty. She was famous for eloping with Sima Xiangru, a talented scholar in Shu during her widowhood. Her stories are often used for reference by later novels describing love.

Zijian refers to Cao Zhi, the third son of Cao Cao, who is a seven-step poet. Cao Zhi has a literary talent and affectionate nature since he was a child. His fruitless love with Zhen Shi (his second brother, Cao Pi's little wife) is praised by the world, and he also wrote a famous poem "Ode to Luoshen" for this.

The meaning of this sentence in A Dream of Red Mansions is that as for books describing love, Zhuo Wenjun and Cao Zijian, who kept their mouths shut, failed to teach people to learn well.

Because in ancient orthodoxy, Zhuo Wenjun eloped with his father as soon as he was widowed; It is very immoral for Cao Zijian to fall in love with his sister-in-law.