C448 Abyssal Tower

Of Yang Fann's three Spirit Beast, one was an early tamed Grizzly Bear, one was Golden Wolf Emperor, and the other was the Bloodeyed Heaven Devouring Cat.

Prison Tower's meaning was this: Yang Fann's spirit could subdue three Spirit Beast, then separating one would mean giving up one slot, so when the time came, the spirit artifact would actually be one of his avatars