There was no need to elaborate on the last step.
What Chen Xiaobei had taught little Chen Xi was the correct way to channel her energy.
However, at the crucial moment, old Feng had to use the wrong method.
This was the only way old Feng could explode again.
Of course, he couldn't do this in the current experiment.
This was because if he mistakenly circulated his Qi again, old Feng would go berserk and forget everything that had happened. This half a day's training would be completely wasted.
In other words, old crazy had to complete this last step in front of the enemy and directly kill the enemy.
In fact, this had become a huge variable.
This was because Chen Xiaobei could not predict what would happen if he encountered an enemy. He could not be 100% sure that old Feng would be able to perfectly imitate Chen Xi's little form.