"It's not worth it."
Alkaid felt his Primordial Spirit vibrate in a tearing manner under the successive bombardment of the Purple Cloud Divine Thunder and had to stop.
He had already endured eight strikes of the Purple Cloud Divine Thunder tempering.
Although if he had desperately held on, he might have been able to withstand nine, ten, twelve, or even fifteen strikes of the Purple Cloud Divine Thunder but...
It was too dangerous.
The Purple Cloud Divine Thunder that might fall in the Purple Cloud Divine Thunder Layer wasn't limited to just one or two at a time.
When Yin and Yang clashed, anything could happen.
Once three or four Purple Cloud Divine Thunders struck at the same time...
He wouldn't be able to withstand it.
His Primordial Spirit would likely be torn apart directly by the Purple Cloud Divine Thunder.
So...
"To delve deeper for a few more times of Purple Cloud Divine Thunder tempering... it's not worth it anymore."
He had always been a cautious person.