Who does Wang Xifeng have an improper relationship with in a Dream of Red Mansions?

Many people think that Jiao Da is the one who "raised brother in law". From this perspective, it may be Jia Rong and Jia Qiang, and some even suggest that it is Jia Baoyu. With regard to her relationship with Jia Rong and Jia Qiang, when Grandma Liu first appeared, Wang Xifeng's suggestion made some Redology scholars think that it was true that they had a relationship (the description of this passage varies from version to version, and it is likely to be Cheng Gao's forgery, which Mr. Qi Gong once questioned); Later, Jia Lian's complaint was also a so-called "proof".

Of course, I think she's just having an affair with Jia Rong and Jia Qiang. Their relationship should be limited to lip service, not to what really happened. If there was, Jia Lian might have divorced her a long time ago, not just secretly cheating.