Why did Wang Xifeng ask Grandma Liu, who was born in a humble background, to name Sister Qiao as her godmother?

Why did Wang Xifeng ask Grandma Liu, who was born in a poor family, to name Sister Qiao as his godmother? The author believes that there are the following situations:

1. Grandma Liu lives a long life

As a peasant woman, Grandma Liu once entered Grand View Garden. When she first entered the Grand View Garden, Mother Jia once asked Grandma Liu how long she lived. Even older than Jia Mu. At this time, Grandma Liu was in good health, and she was still alive for many years to come. Even if Jia's mother, who was several years younger than her, passed away, he could still come forward when the Jia family was in crisis. Sister Qiao was one year old when she met Grandma Liu. She was often sick and prone to disasters. The Jia family should have given her a name before, but it still couldn't solve the actual problem, so Sister Qiao's name was changed again and again. Not settled yet. At this time, Grandma Liu happened to be related to the Jia family, and there were few relatives in the Jia family who were as poor and healthy as Grandma Liu. So Wang Xifeng asked Grandma Liu to name Qiao Jie's son. Wang Xifeng hoped to borrow Grandma Liu's blessings and longevity so that Qiao Jie's son could grow up healthily and safely.

2. Sister Qiao will later become Grandma Liu’s granddaughter-in-law

Grandma Liu entered the Grand View Garden and walked to Tanchun’s room. Baner asked for a Buddha’s hand to play with. Later, when Ban'er and Sister Qiao met, they saw Sister Qiao holding a grapefruit, so the two exchanged their toys. The homophonic pronunciation of bergamot and grapefruit, the former also called citron, implies that Qiao Jie and Ban'er will have a good relationship, and that Grandma Liu will later bring a turning point in Qiao Jie'er's life, which is foreseeable in this koan. For Wang Xifeng, receiving Grandma Liu was just for everyone's amusement, but for Grandma Liu, it was a great favor. Sister Qiao and Ban'er seem to have very different family backgrounds, but there is this public case. In fact, it is Cao Gong hinting that the Jia family fell into decline later, and ended up in a "white and heavy snow, so clean."