As he consumed more and more high-level fifth-grade spirit pills, his physical body continued to strengthen.
I believe it won't take long before his physical body meets the conditions to advance to the late stage great ability.
As for the energy within the grotto heaven, with the output speed of five grotto heavens' energy, it takes about one hundred and fifty years to reach full capacity.
That is to say, in one hundred and fifty years, he can attempt to break through to the late stage great ability.
This is assuming he doesn't consume grotto heaven energy in large scale, otherwise this time will be continuously postponed.
Why are great powers very cautious about using grotto heaven energy? After Li Yuanba used energy-converted flying swords to slay enemies, Brother Yi Yao Great Power would advise and persuade Li Yuanba, because grotto heaven energy relates to a great power's future.
