After the Giant Axe Sacred Land.
Wu Dao had manipulated the Celestial Prides of the All Heavens into being his free labor, opening a large number of treasure troves in the forbidden zones.
Not only did he obtain five Great All Heavens Divine Techniques, but he also made a fortune in various Extraordinary Cultivation Resources.
Wu Dao had already recalled most of his Incarnations. He stopped venturing into the forbidden zones and entered a state of dormancy.
He needed to focus all his energy on refining the Second Generation Primordial Dao Wheel and digest the five Heaven-Opening Techniques as quickly as possible, so he couldn't afford to be too distracted.
Of course, the main reason was that the forbidden zones were not static. Just because he knew the location of a treasure trove didn't mean it would be waiting there for him to excavate.
Hundreds of thousands of years had passed since the Slaughter Emperor roamed the forbidden zones.
