I rely on my body to push the weird world

The Great Yan Dynasty has come to an abyss of mystery. Evil spirits are everywhere. The world is devastated and the people are unable to live in misery.
Li Ji traveled through time.
Any martial arts, once it passes through his hands, can have its training time infinitely modified.
[Eagle Claw Iron Cloth → 20 years → 50 years → 100 years]
【Five Tigers Breaking Gate Sword Technique→30 years→60 years→100 years】
[Vajra Indestructible Divine Art → 40 years → 80 years → 100 years]
【…】
Li Ji was a burly man, with muscles as knotty as a dragon, and bloodshot eyes. He casually crushed a strange creature with a grim and sneered tone.
"Martial arts can't kill weirdness?"
"That's because you're not strong enough!"