Please recommend a cultivation novel in which the protagonist can devour natural treasures.

The main character had the ability to devour heavenly and earthly treasures to increase his cultivation, which was similar to the invincible treasure body. However, the background of this novel was in the cultivation world. Other than that, his ability seemed to only be able to eat materials. At the beginning of the third and fourth chapters, the first time he used his ability was to devour a piece of ore. Later on, he went to the underwater demon dragon palace to steal things and wandered around the many immortal islands overseas. There was also a setting in the book that the main character was on a continent that was separated by a man-made array. The main character was on a relatively barren area that was isolated. Later, when the main character's cultivation level was high, he was told that he had broken out with one of the demonic bosses at that time. In the middle of the book, the main character was suddenly attacked by many people. I haven't read the rest of the book.