Ok, this is a harder vote than the previous one.
If I remember right, Renxiang's uncle has a 5 tailed spirit fox companion and she is Dawn aligned. We can assume that Bian Ya's fox is as well, at least general sun aligned.
So Su Ling's mother, and thus her own, night alignment is due to the corruption that was born when the pacts were broken and the shrine desacrated?
Interesting.
If the old god of the Diao lands was that 9 tailed fox great spirit that would certainly explain that Diao woman interest in Su Ling. And in introducing her to her son, nephew o whatever familiar.
If you want to revive the importance of the old ways in the current world, what better way than to marry the blood of a literal ancient god into your family?
Now, if it was just us, I would want to learn more about the history of the Hui, Diao and fox spirits. But this trip is for Su Ling's sake.
Su Ling is right that whatever happened here doesn't excuse her mother's crimes. We aren't gonna learn anything that we can't already kind of guess. Su Ling isn't gonna forgive all her mother's murders just because some sad backstory, and she shouldn't. And personally, I don't like that all villains have to be sympathetic.
Su Ling hates her resemblance with her mother. Both in appearance and innate powers. That's why she has cultivated mountain and anti-illusion arts, and is considering surgery to remove her blood-line.
However, meeting Bian Ya and Renxiang's uncle's companions, along with all the good her pyromancy divination has done, has started to make her doubt.
Meeting with a wild spirit fox could either finish changing her mind or not, but I think it will be good for Su Ling to know fox spirits better beyond her mother.
[X] Check up on the Kid, if they are up to something, better to know.