During Shen Tang's two days on the spaceship, listening to Uncle Qiu Yang's occasional ramblings, she finally understood why the Nine-tailed Fox clan valued pure bloodlines so much.
It turns out that only the offspring of two pure-blooded Nine-tailed Foxes can be "Nine-tailed" Foxes.
If one of the parents is from another race, the offspring might be an Eight-tailed or a Seven-tailed Fox, or even worse, a Six-tailed or a tailless defective one, unable to awaken the Destructive Fire, reduced to a Mortal Beast.
Qiu Yang's mother had an affair with a Wild Fox Guard, resulting in his birth as a mixed-blood Eight-tailed Fox Beast, a disgraceful and illegitimate child, considered a family shame, expelled from the family, left to fend for himself.
The late Emperor took pity on him and took him as a subordinate, treating him with immense kindness.
Since then, Qiu Yang has devoted himself loyally to the Royal Family.
