"What's six less than sixty-four?"
With one glance at the pebble matrix, Anji immediately knew the answer.
"Fifty-eight!"
Nodding with satisfaction, Yan Ping told Anji to remember how the pebble counter worked and use it whenever she needed to check her calculations.
"If you practice enough, you'll eventually be able to use only your fingers or the abacus to get the correct numbers. Now that we have solved one of the biggest problems, it's finally time to understand the heating seal element."
Moving to the concept of measuring energy in breaths, Yan Ping explained how the measurement of qi isn't constant. Depending on the cultivation level, one breath of qi could light a candle or set a house on fire. Hence, limiter and differentiator runes were introduced. They followed a mathematical formula, calculating an unknown factor.