The Indestructible King Kong and the Thousand Blades of the Demonic Sword, Who Else!

The protagonist Li Ze traveled to the world of martial arts and found three peerless magical skills in a stone cave. He practiced them for seventeen years and became invincible upon exiting. Later, he practiced the art of weapons and forged a sword similar to the Demon Sword Thousand Blades out of meteorite iron and named it the Demon Sword Thousand Blades. The latter unified the martial arts world and established three peerless sects before escaping into the world of mortals...