C32 Little Feng Returned the Strongest Silver 2 in All of History

Was this battle spirit? In his experience, materializing battle qi could only be done with weapons. He had never seen human body battle qi being materialized before. Moreover, it could even change its form freely. How could he cultivate it?

These erroneous words came from the three-headed middle-aged man from a moment ago. I am not sure what battle spirit is