Discovering the unhatched eggs of the "Flame-devouring Spider," this can truly be described as a major find.
The adult "Flame-devouring Spiders" that have tasted human flesh are wild and difficult to tame. Eventually, when they grow old and weak or cannot endure captivity and choose to die, their fate is to be killed for their silk, which is then refined into magical artifacts—a one-time deal.
However, if they can be tamed from a young age, there is a high possibility of domestication into family-owned spirit beasts. This way, the Zhou Family would gain a stable source of income from selling spider silk, further enhancing the clan's foundation.
Moreover, the "Flame-devouring Spider" doesn't just spit silk for money. Its combat capability is rather strong, and it can serve as a backup force for the family in critical moments.