Even with the breakthrough in his realm and the explosive increase in his consciousness, Lu Yun found it extremely taxing. Each character of the secret art he contemplated consumed a vast amount of his divine consciousness.
His divine consciousness was exhausted time and again. After repeating this process for nearly half a month, Lu Yun finally committed the entire secret art's incantation to memory.
"The Dao gives birth to one, one gives birth to two, two gives birth to three, the Tri-Clear are but the Three Peaks... born with Heaven and Earth, existing alongside the sun and the moon..."
Essentially, the "numerical secret" was a secret art similar to the transformation of one into the three purities, capable of summoning two spirit bodies to battle foes.
These two spirit bodies could employ the original body's divine abilities and secret arts, their strength in no way inferior to the original body, making them extremely suitable for both combat and escape.