Cultivation: I Can Upgrade My Techniques Without Limit

Transmigration, skill upgrades, ruthless decisiveness, a protagonist who is neither wholly good nor evil. Do not read if you want a saintly protagonist.

By a twist of fate, he arrived in this cultivation world, bringing along a Proficiency System.

As he keeps practicing his spells, the System rewards him with upgrades:

Cloud and Rain Art evolves into → Spring Breeze and Gentle Rain → Heavenly Rainfall → Heaven's Rain Art (increases plant growth speed by 1,000%, with an added effect that gradually changes the surrounding soil)

Rejuvenation Art evolves into → Spring Breeze Across the Body → All Trees Reborn in Spring (increases plant growth speed by 500%, with an added effect that can restore dead plants to life)

“Wait, Heaven's Rain Art and All Trees Reborn in Spring can stack, and the calculation is multiplicative.”

Staring at the spirit plants before him, growing at a terrifying fifty times their normal speed, Lin Xin said in shock.

“Fine, fine, so that's how you're playing it.”

“Then I guess I'll just have to level up these two skills again...”

And so began the life of a 24/7 grind addict, practicing for skill proficiency every waking hour.

As he continued upgrading his skills, Lin Xin suddenly realized, when he'd reached the point where nothing could be improved any further,

that before he knew it, he had cultivated every technique in the world to the pinnacle of perfection.