chapter 415 Courage and perseverance live in your heart!

"The power system of blood circulation allows blood..." Cassie naturally blurted out basic medical knowledge that was even entry-level. "No." Horacio turned his head slightly and pointed at Cassie's heart and said, "In the heart, there is hidden the soul, courage, and willpower!" "And the function of the heart is to force something into the body, so that every cell in the body is filled with these things." "Those with willpower and courage living in the heart are called ordinary people." "And the...