Invincible Martial Arts Training in All Realms

The protagonist Lu Ren accidentally traveled to the extraordinary earth, obtained the martial arts system of all realms, and became invincible in all heavens and all realms! It is expected to travel through Swordsman, One Piece, Naruto, Fighting to Break the Sky, and Covering the Sky. PS: The main world is an original world This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.