"Is this really okay? It won't suffocate?" Little Silver looked suspiciously at the wooden bucket.
"It's fine." Pen shook his head and said, "Before my Lord dumped it into the bucket, he sealed all its acupuncture points and cleared its meridians so that spirit energy can circulate through its body smoothly."
Little Silver nodded his head. "I see."
He had only seen Wang Ling dump Loopy Toad into the wooden bucket, and didn't know what else he had done. Spirit energy itself carried oxygen, and this "spirit energy internal circulation" method was actually quite common for connecting meridians together; it was an advanced version of the turtle-breathing skill, but could last for longer.
When the "spirit energy internal circulation" technique was in effect, a cultivator could go without breathing for seven to ten days; the higher the cultivator's realm, the longer they could maintain this situation.