I Can't Believe I Became a Cultivation Grandmaster

P.S. I start taking myself seriously in Chapter 91, and the story takes off like a rocket. The earlier chapters were a bit brainless and made everyone dumber. I'm sorry, everyone. After giving it a lot of thought, I've decided that starting from Chapter 91, it won't be like that anymore. Please support the book and give Chapter 91 a try. Thank you!

After transmigrating into a cultivation world, Li Yan feels like he hasn't done anything at all. Three years have passed, and all the System has taught him is ordinary worldly stuff: growing herbs and vegetables, blacksmithing and forging, making pottery out of mud, painting, singing, dancing, playing the zither, and practicing simple martial arts and swordsmanship that even old people know.

Yet years later, the carp that come to hear him recite scriptures and poems every day have become the most violent immortal beasts.

The little bird in the tree has become the fiercest phoenix, capable of swallowing the heavens above and immortals below.

He casually performs a few dance steps, and people call them a world-ending dance.

He leaves a few hundred paintings on the ground, and people call them immortal-slaying diagrams.

He shapes useless pottery out of mud and leaves it outside his house, and people call it an immortal artifact.

He casually forges a piece of useless scrap iron, and people call it a long-lost material.

He casually yells a few times, and people call it the music of the immortals. Though some call it demonic music.

Some people even say he's a great cultivator. What's going on with this world? He doesn't know how to cultivate at all, so how did he become a great cultivator?