Yet the price paid by the one who used this technique was merely one-tenth of the lifespan it drained away.
If this technique were used against cultivators of the same realm,
then a cultivator who had mastered it could likely directly wear ten cultivators of the same realm to death.
Moreover, if those cultivators of the same realm all had little lifespan remaining,
that number would likely surge dramatically.
It would not be impossible for one person to wear dozens, or even more, cultivators of the same realm to death.
After doing the calculations, He Song felt deeply moved.
With this technique at hand,
so long as He Song was not directly slapped to death,
he possessed the ability to kill any cultivator.
Of course, to avoid being directly slapped to death, He Song's cultivation had to be within the same major realm as his opponent.
If there was a gap of a major realm,
He Song would likely be slapped to death by those powerhouses before he even had the chance to strike.
In that case, this divine ability would naturally have no chance to be used.
Unless He Song launched a sneak attack against his opponent.
And once the sneak attack succeeded, He Song might truly have a chance to kill an even stronger cultivator whose cultivation was one major realm above his own.
However, how could it be so easy to deceive a powerful cultivator whose cultivation was a full major realm higher than He Song's?
Moreover, the cultivation world had countless methods. Who knew what trump cards a cultivator one major realm above He Song might possess?
And at that time, He Song would have only one chance to strike.
If that strike failed, he would perish, body and soul extinguished.
Therefore, although He Song realized