Five Qi Grotto-Heaven.
Gao Xian gazed at the dense, black clouds gathering overhead, his expression quite grave.
After reaching the sixth rank, cultivators only needed to face one kind of heavenly tribulation: the lightning tribulation.
The lightning tribulation appeared unchanged—it was simply the yin and yang energies of heaven and earth condensing into thunderbolts and striking down. In truth, tribulation lightning needed no changes. So long as its power kept rising, it posed an enormous threat to cultivators.
Whether at the sixth, seventh, or eighth rank, one had to face lightning tribulations with extraordinary caution. High-level cultivators truly had only two things to do: cultivate and overcome tribulations.
After slaying the Netherworld Demon Venerable and the Blood Shadow Demon Venerable, and wiping out the elites under both powerhouses as well, Gao Xian had finally raised the Army-Breaking Heavenly Sha Sword to the Grandmaster realm.
Of the seven realms marked by the Wind and Moon Mirror, the leap from Expert to Master was a tremendous qualitative transformation. The leap from Master to Grandmaster was an even greater transformation on a higher level. Once Grandmaster perfection was attained, there was nowhere further to advance—the ultimate realm.
To upgrade the Army-Breaking Heavenly Sha Sword, Gao Xian had slain who knew how many members of the Demon Race and Demonic Cultivators. The baleful qi it had accumulated was incomparably dense and powerful.
The Blood River Celestial Venerable Transformation Origin Book only absorbed blood essence and remnant souls. The baleful and foul qi within them had in fact all been transferred to the Army-Breaking Heavenly Sha Sword.
Gao Xian knew that the lightning tribulation of his natal yang spirit would inevitably be terrifyingly powerful. For that reason, he first had the Taiyuan Divine Image and the Taixuan Divine Image undergo their third lightning tribulations.
This