C244 Autumn of the Golden Autumn the System Has a Personality Which Is a Huge Poison!(1)

So this is what the Nine Dragons are all about. It's neither blood nor spine, but rather a quality akin to the Cangjie Book, integrating a spirit and its abilities into one's own body. That's why no test could ever detect the Nine Dragons. Before the Second Awakening, the power resided solely in the spirit, and he was merely manipulating it to engage in battle.

Dr. Liu had his own agenda