Yang Yu got a system, which told him that it could allow him to travel across all worlds to practice! In Douluo Continent, his martial soul is a devil fruit, and each soul skill is a different devil fruit, shining, thunder, and shocking... In the sky, he became the only player in this world, the ancient royal family became his experience package, and the ancient emperor who cut off the Taoist fruit became his bss to fight the extreme Taoist emperor's weapons! In the perfect world, he is a gourmet, barbecue of ancient seeds, pure blood creatures stewed soup! In the fight breaking the sky, in the martial arts movement of the universe, in the peerless Tang Sect, in other worlds! [This is an invincible story, also known as 'The Full-time Master of All Worlds' and 'The Man Who Learns Crafts in the World of Novels'...]