The reasonableness of words is only one aspect; the important thing is whether there is a willingness to accept them.
Yu Xuanbing doesn't actually want to hear too much philosophy, he just wants Shi Chun to give a guarantee, and if Shi Chun gives it, that's enough.
The reason is simple. If you break your promise, I also have something in my hand that can bring you down.
Therefore, after receiving the guarantee, he didn't consider much else. After all, he had already used a Secret Technique to quietly inspect before coming here and could be said to have immediately decided: "Okay, arrange a suitable identity for my family of three to settle under your care."
Is it decided just like that? Shi Chun and Wu Jinliang exchanged glances again, surprised by how smoothly things went without any hurdles, which felt a bit unfamiliar, as both had grown accustomed to the hardships and twists of life.
