Jin Rong, the only son of Huang Jia's daughter-in-law, is a collateral relative of Jia's family, so he is not qualified to attend Jia's school. The school run by the Jia family must be the children of the Jia family. At worst, they must be relatives of the Jia family to go to school. Jin Rong: His surname is not Jia, and he is a distant relative of Jia's family. If his aunt Huang Grandma hadn't begged Wang Xifeng, he wouldn't have entered Jia Fu at all.
In feudal society, with Jia Baoyu's background, others had to curry favor with him everywhere, let alone kowtow. Jin Rong, a weak relative who has nothing to do with Jia Fu, dares to bully Jia Baoyu. In fact, this is a metaphor for the Jia family before its defeat. This is also the author's foreshadowing before Jia's defeat. Cao Xueqin wanted to express Jia's century-old family, but the result was? Is the white land really clean? The point is.
In fact, the reason for this chapter is that Qin Keqing's younger brother Qin Zhong told Xiang Lian some intimate whispers in the backyard, but these whispers were heard by Jin Rong. At the end of school, Jin Rong said that Qin Zhong and Xiang Lian were whispering in the drum, and combined with self-analysis and understanding, described them as very unbearable.
So Jia Baoyu followed Jin Rong's theory for Qin Zhong, and then Jin Rong moved with Jia Baoyu. At that time, the students in Jiafu School were all children of Jiafu. When they saw Jia Baoyu being bullied, they should stand up and help, but even Jia Baoyu's nephew Jia Lan didn't help. Finally, Jia Jun asked Yan Ming to help Jia Baoyu.
Therefore, this passage is mainly to express a hint that Jia Fu gradually turned from prosperity to decline.