Man, I wish I had good news on this one, but from everything I've seen digging around Chinese web novel sites and fan forums, 'Absolute Dominion' doesn't have a direct, official sequel. The main story wraps up pretty conclusively, which is both a blessing and a curse. The author, Li Tian, seems to have moved on to other projects.
That said, the fandom hasn't let it go completely. There are a handful of fan-written continuations floating around on certain forums, exploring what happens after the final showdown. They're obviously unofficial and vary wildly in quality—some are just power-fantasy extensions, while others try to delve into the political fallout of the ending. If you're really craving more of that world, those might scratch the itch, but it's not the same as a proper sequel.
Honestly, I'm kinda okay with it ending where it did. The last act felt final, you know? The protagonist achieved what they set out to do, and continuing it might've just diluted what made the story work in the first place.