Credits To Mr. Fu

The refilling and the cultivation of Life Power were two different processes. Under normal circumstances, cultivation of the Life Power would require a massive amount of Life Crystals to extract Life Light and turn that into Life Power, filling the empty columns with them. Even with sufficient Life Crystals, an upper-range Life Skill would take two hours to completely fill one column of Life Power. With the time spent on sleeping and eating taken away, it was considered fantastic if an ordinary person could get seven to eight columns of Life Power within a day.