Since it was a gift intended for An Jing, You Ruhui quickly took out a small box.
The box wasn't large, made of Xuan wood, and inside it was an octagonal prism. At first glance, it resembled an Eight Diagrams Wheel, approximately the size of a heart, freely circulating Spirit Qi, comparable to a first-stage Martial Artist's Inner Strength.
The outer layer of the octagonal prism was a layer of water jade, while the inside was bright red, looking like an elixir and yet like flesh and blood, pulsating like a heart, giving An Jing a familiar feeling.
"This thing..."
He picked up the octagonal prism, placed it in his hand for a careful examination, and then had an epiphany.
An Jing looked at You Ruhui firmly and said, "Is this the Biological Spiritual Energy Furnace you've refined using your own flesh and blood?"
"Yes."
