"Dream of Red Mansions" is mainly described in the twelfth chapter: "Wang Xifeng went to the acacia bureau and Jia Tianxiang was taking care of it": Jia Rui was teased twice by Xifeng and was seriously ill in bed. At this time, a lame Taoist gave Jia Rui a mirror, claiming that only the back of the mirror, not the front, could cure Jia Rui's illness, but Jia Rui did the opposite and died.
The "romantic mirror" that Gary held on his deathbed is just an image and concrete metaphor of this book. The front mirror describes a prosperous, gentle, rich and affectionate romantic novel, while the back mirror is a history full of bones, blood and tears, a history hidden in the novel.
Note: Jia Rui is a character in Cao Xueqin's novel A Dream of Red Mansions-Jia Dairu's eldest grandson, Jia Fu's suicide note. Greedy and cheap, he died in the "Acacia Bureau" set by Wang Xifeng.