"Speaking of the Hu clan, I have to ask, Sister Cui, even though you have unavoidable reasons to hide out here on East Market Street, there's no need to not use your surname, just letting people call you Sister Cui."
Since Sister Cui is a Wild Immortal of the Hu clan, she must naturally have the surname Hu.
So just call her Hu Cui, then.
There are so many people with the surname Hu in the world, no one can determine Sister Cui's association with the Hu clan based solely on the surname.
"Young Master, you might not know, but names in the Hu clan always have three characters. The surname is naturally 'Hu', one character is for the name, and another character represents the generation,
the character representing the generation is more important than the surname itself. If you mention the surname, you must include the generation."