The progress with the Nether Script had been quite good.
He had completely mastered the fourth grade, and more than two-thirds of the third grade as well.
A little over twenty days—this was more or less in line with his own predictions. Further on, no matter how extraordinary his talent was, the difficulty of cultivating the Nether Script would not be so easily overcome.
Judging from the current situation, he should be able to finish the remaining third-grade passages in about five days.
Then came the second grade.
At the thought of this, Li Su could not help but frown.
Second-grade Nether Script was truly difficult. Though there were few of them, only nine in all, Li Su had passed by them while studying the third grade and taken a brief glance.
Though it had only been one glance, he had still caught a glimpse of the difficulty within.
Very high!
Even for him, it would probably take two to three days to complete the analysis of a single one.
The second grade alone would likely take at least a month or so.
Of course, though the time expenditure was astonishing, the benefits were equally obvious.
The integration of the fourth- and third-grade Nether Script had allowed Li Su to feel a genuine improvement, one far beyond anything the lower three grades or middle three grades could compare to.
For the lower three grades, even including awakening, the increase to Li Su's strength had been less than one percent.
He was simply too strong. The Nether Script below Heavenly Immortal level brought him more preparation for a transformation of the soul than any direct increase in power.
As for the middle three grades, the increase in strength was greater, but the greater enhancement still lay in the soul's transformation.
This