Chapter 772: Encyclopedia Grandpa

He finally met a human ancestor, a prehistoric human. And he was obviously more reliable than those scum in the Snow God's Temple! Han Fei certainly would take the chance to ask him some questions.

It seemed that this was the first time Shu Shan chatted with a person in countless years, so he was also being very talkative, saying with a smile, "Any creature has soul energy. Human beings' soul energy is very mysterious and its specific quantity cannot be calculated. In the past, we discovered that when spiritual beasts fought for some time, their combat power would decrease. And then we learned to calculate their soul energy according to the degree of the decrease of their combat power."

Han Fei took a breath. No wonder, no wonder the primitive spiritual beasts I saw all had soul energy!

Han Fei asked again, "What about contractual spiritual beasts?"