In the days that followed, Han Sen didn't eat or drink much. He spent all his time modifying Under the Sky and Break Six Skies.
Under the Sky wasn't very compatible with Break Six Skies, so Han Sen would have to use his dual pistols from Spell to channel the power. And Break Six Skies had to be modified, as well. He might not be using the geno art's full destructive capability, but the explosive power had to be sufficient to annihilate God's Knife. Only by doing that could Han Sen perform his one-second judgment into the past.
This was a very big project. Han Sen focused all his attention on modifying the skills. He wanted to make the technique as perfect as possible. God's Knife was such a scary being. If there was the slightest flaw in his plan, Han Sen would lose the fight and die.
But Han Sen was confident that he had what it took. Sooner or later, he'd make it work.