Thunder Abyss!
It was called the Thunder Abyss because, within this forbidden land...
At every moment, immensely powerful bolts of lightning came crashing down with a roar.
Their speed was inconceivably swift; more importantly, they struck unpredictably and in overwhelming density!
If that were all, it would have been one thing!
But every bolt of lightning in the Thunder Abyss possessed exceedingly formidable power, each one at least equal to the full-force strike of a Nascent Soul Great Perfection cultivator.
Lightning of such power was still relatively scarce.
Most bolts each contained the terrifying might of the Spirit Transformation realm.
If one's luck was poor, even supreme figures of the Cultivation World—Spirit Transformation Venerables—could perish within the Thunder Abyss.
According to Chu Daofeng, quite a few Spirit Transformation Venerables had entered the Thunder Abyss and never emerged again.
This alone showed just how terrifying this forbidden land was.
Of course, although Cheng Buzheng had never heard of the Thunder Abyss, he believed that Chu Daofeng would never deceive him about such a matter.
Had that been all, Cheng Buzheng would not have been so moved!
At most, he would have treated the Houtu Turbid Qi deep within the Thunder Abyss as a final, helpless option.
However!
This Jade Slip not only contained the location of the Houtu Turbid Qi, but also a route map, marking when to enter each stretch of the route and when to step into the next...
A winding green line was drawn on the map. That was the route!
And along that twisting green line were yellow dots...
These marked the individual stretches of the route, along with the precise times for entering them.
During those periods...
The lightning falling within the Thunder Abyss was at its weakest.
Even so, one needed at least the cultivation