Gao Wu: the 9999Th Level of Body Tempering Is Invincible at the Beginning

Invincible Lin Xuan once practiced martial arts in a secret realm for 3,000 years in order to resist the demons outside the territory. In order to break through the realm, he internalized even the system as a part of himself. He once practiced martial arts to a state of madness, and almost forgot that he was actually a time traveler. In 3,000 years, the body has been tempered to 9,999 levels, and it has never broken through to the warrior realm. On this day, he finally decided to go out to see if the world was still alive...