The marines all nodded in unison, then dispersed across the training ground. They carefully considered the key points Zefa had explained and began trying to practice the Six Powers of the Marines.,His eyes snapped open, a glint of steel flashing in their depths.,The difficulty of practicing the Navy Six Styles is not low. Even some senior officers at headquarters can only master one or two styles, using these styles to help themselves break through certain limits of human potential.。