The extended clash of swords was already a test of will, and what more of repeated sword techniques?
It's known that at every breath, their exchange could reach up to thirty-nine strikes, slowing down only slightly later, never less than twenty.
Chu Xisheng could no longer recall how many times he had used these two moves.
Assuming twenty sword strikes per breath, and an average person breathing twenty times a minute, he likely used 'Return Light' and 'Void Hall Mirror' no less than a hundred thousand times.
The Blood Revenge Blade Lord was incredibly tenacious, having lasted for twelve hours before exhausting his Primordial Qi.
However, this battle had its advantages; Chu now had a more comprehensive understanding and awareness of the Divine Wind Bright Mirror Blade and the Vengeance Blade.
'Return Light' and 'Void Hall Mirror' had become his instinct, forming muscle memory.