As for Old Devil Ji's "career," the most dangerous moment was actually during the first six months in the Sky Devil Sect.
Although things seemed reckless afterward, it was always very safe.
Only during the first six months after joining the Sky Devil Sect would meddling in his life be most effective.
The last time Emperor Zi Wei and Emperor Gou Chen tried to make a move on him, they also picked that timeframe.
Unfortunately.
Precisely because of their intervention, Ji Changsheng managed to patch up the most dangerous loophole.
Hence, one of the core requirements for ascending to Supreme Unity, in terms of self-contained logic and Dao comprehension, Ji Changsheng had already met.
What he lacked was sheer mana.
Dao is hard to cultivate.
Mana, on the other hand... there are far too many shortcuts.
Pills, amassing merit, cultivating Devil Spells, seizing authority... In short, this isn't hard; it's just a matter of time.
