My frequent visitor is actually Liyue Qixing!

There are rumors in Liyue that there is a mysterious restaurant, and only those who are destined can step into it.
As the owner of the restaurant, Lu Qingci, he is hospitable. Although there will always be some strange guests, he will always listen to the troubles in the hearts of the guests and recommend the chicken soup he made himself to them.
Over time, these customers respected him very much, until one day he suddenly discovered that the regular customers of his restaurant seemed to be big bosses! ?
Gan Yu: "Boss Lu is really a very good person, always willing to listen to my troubles and communicate with me."
Ke Qing: "Boss Lu is a person with excellent vision, and he can always give opinions that hit the nail on the head, which benefits me a lot."
Ning Guang: "Boss Lu's talent is something I have only seen in my life. I would like to offer all of my wealth, just to ask Boss Lu to be my husband-in-law."
Lu Qingci expressed panic about these comments. Isn't he just cooking a dish, and occasionally recommending some chicken soup for the soul to the guests?
Why did he suddenly become Liyue Qixing's life mentor!